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Climate change

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Articles 31 - 60 of 834

Full-Text Articles in Life Sciences

Climate Changes And Trends In Phenology Of Woody And Herb Plants In Inner Mongolia, 1981–2010, Yurong Wei, Yanfang Cao, Zhicun Wang, Xuebiao Pan Feb 2020

Climate Changes And Trends In Phenology Of Woody And Herb Plants In Inner Mongolia, 1981–2010, Yurong Wei, Yanfang Cao, Zhicun Wang, Xuebiao Pan

International Grassland Congress Proceedings

The phenology of plants is a comprehensive reflection of seasonal climatological and ecological conditions and may be used as an indicator of climate change (Thomas et al. 2000; Volker and Annette 2004; Li et al. 2005). Analysis was made of the dates of sprouting, flowering and defoliating of woody and herb plants observed on 24 Agricultural Meteorological Stations in Inner Mongolia, China from 1980 to 2010. To assess the potential future change data was analysed for the 2011 to 2050 period using the England Hadley Climate Centre scenario (Wei et al. 2012).


Precipitation Pattern Change Influence On Vegetation Of Xilingol Grassland In Inner Mongolia, China, Wulanbter, Yurong Wei, Pengtao Liu, Xirong Jiang Feb 2020

Precipitation Pattern Change Influence On Vegetation Of Xilingol Grassland In Inner Mongolia, China, Wulanbter, Yurong Wei, Pengtao Liu, Xirong Jiang

International Grassland Congress Proceedings

The Xilingol grassland covers the region bounded by 41’09”–45’31” N and 111’14”–118’25” E. It is representative of a typical steppe in northern China, with the major native grass species present being Aneurolepidium chinense and Stipa spp. However these grasslands have become increasingly degraded due to desertification and/or the impacts of human activities resulting in the previous climax plant community becoming substantially altered.

In the Xilingol League most weather station started observations around 1960 (earliest 1952), however, grassland phenology and biomass measurement only started in 1980. The growing season runs from the 1st May ...


Assessing Resilience Of Pasture Production To Climatic Changes, Brendan R. Cullen, Richard P. Rawnsley, Richard J. Eckard Feb 2020

Assessing Resilience Of Pasture Production To Climatic Changes, Brendan R. Cullen, Richard P. Rawnsley, Richard J. Eckard

International Grassland Congress Proceedings

Increasing temperatures and atmospheric carbon dioxide (CO2) concentrations, together with changes to rainfall patterns, will influence seasonal pasture production; however climate change projections for south eastern Australia are uncertain (CSIRO and BoM 2007). Despite this, climate change impact assessments generally rely on specific climate projections, but in this study an alternative approach was developed to test the resilience of production to incremental changes in climate.


Impacts Of Projected Climate Change On Pasture Growth And Safe Carrying Capacities For Three Extensive Grazing Land Regions In Northern Australia, Giselle L. Whish, Robyn A. Cowley, Lester I. Pahl, Joe C. Scanlan, Neil D. Macleod Feb 2020

Impacts Of Projected Climate Change On Pasture Growth And Safe Carrying Capacities For Three Extensive Grazing Land Regions In Northern Australia, Giselle L. Whish, Robyn A. Cowley, Lester I. Pahl, Joe C. Scanlan, Neil D. Macleod

International Grassland Congress Proceedings

The northern beef industry is a major component of the regional economies of Queensland, Northern Territory and northern Western Australia, and has contributed an estimated $5 billion to Australia’s economy in 2009-10. Projected climate change will have an adverse impact on Australia’s agricultural production (McKeon et al. 2008) with an expected 3.5% decline in beef production in northern Australia by 2030 (Heyhoe et al. 2008). The GRASP pasture production model (McKeon et al. 2000) has been used to evaluate impacts of climate change in Australia’s rangelands (Crimp et al. 2002, McKeon et al. 2008), with the ...


Impact On Grassland Biomass From Climate Warming And Drying, Suying Li, Li Yang Feb 2020

Impact On Grassland Biomass From Climate Warming And Drying, Suying Li, Li Yang

International Grassland Congress Proceedings

It is becoming increasingly urgent to assess the impact of climate change on grassland biomass due to the important role these grasslands play in animal production. The typical steppe in Xilinhot of Inner Mongolia is the most representative vegetation types in the temperate grasslands of the northern China. One means to determine climate change is using the Aridity index (AI, also referred to as the dry degree of climate in this article) that is based on both temperature and precipitation (Arora 2002; Bannayan et al.. 2010; Nastos et al. 2012). The objective of this paper was to indicate how the ...


Future Climate Change Impacts On Pasture Biomass In Mongolia, Erdenetsetseg Baasandai, Erdenetuya Magsar Feb 2020

Future Climate Change Impacts On Pasture Biomass In Mongolia, Erdenetsetseg Baasandai, Erdenetuya Magsar

International Grassland Congress Proceedings

The main objective of this study is to estimate pasture biomass changes in Mongolia using the simulation model CENTURY. For the study framework we used the fenced pasture biomass data from 1960’s to 2008, over 60 meteorological stations and simulation data of the carbon, nitrogen, aboveground and belowground biomass, potential evapotranspiration, evaporation, transpiration and precipitation data across these grasslands. The simulated climatic and other parameters were estimated meteorological station based and their differences between 2 time periods were calculated. With purpose to make comparison of the present situation to the future situation used Climate Change Scenarios under A2, A1B ...


Comparative Analysis Of Climate Change Adaptation Options Across The Southern Australian Livestock Industry, Afshin Ghahramani, Andrew D. Moore Feb 2020

Comparative Analysis Of Climate Change Adaptation Options Across The Southern Australian Livestock Industry, Afshin Ghahramani, Andrew D. Moore

International Grassland Congress Proceedings

Climate change is predicted to have a substantial negative effect on the productivity of grasslands across southern Australia (Moore and Ghahramani 2013). We used the GRAZPLAN biophysical simulation models to assess several possible grassland management and animal genetic improvement adaptations under SRES A2 climate change scenario. Simulations spanned the five dimensions of geography, time, global circulation models, enterprise, and adaptations. Impact of climate change was predicted to reduce profitability of livestock industry by 46%, 58%, and 72% at 2030, 2050 and 2070, respectively. Increasing soil fertility could return the average profitability of five livestock enterprises to its historical level at ...


Modelling Adaptation And Mitigation Strategies For Southern Livestock Industries Of Australia, Richard J. Eckard, Richard P. Rawnsley, Brendan R. Cullen, Matthew Bell, Karen Christie Feb 2020

Modelling Adaptation And Mitigation Strategies For Southern Livestock Industries Of Australia, Richard J. Eckard, Richard P. Rawnsley, Brendan R. Cullen, Matthew Bell, Karen Christie

International Grassland Congress Proceedings

Climate change will impact on the Australian grazing industries both through mitigation policies and the impact of warmer temperatures, increased atmospheric CO2 and changed rainfall patterns (Cullen et al. 2009; Eckard et al. 2010). Mechanistic models are useful tools to inform our understanding of the complex interactions between future climates and the soil, plant, animal and management in livestock production systems.

This paper summarises the results of a number of whole farm systems modelling studies investigating likely impacts of climate change, adaptation options and emissions implications for livestock production in southern Australia.


Challenges And Opportunities For Improving Eco-Efficiency Of Tropical Forage-Based Systems To Mitigate Greenhouse Gas Emissions, Michael Peters, Mario Herrero, Myles Fish, Karl-Heinz Erb, Idupulapati M. Rao, Guntur V. Subbarao, Aracely Castro, Jacobo Arango, Julian Chará, Enrique Murgueitio, Rein Van Der Hoek, Peter Läderach, Glenn Hyman, Jeimar Tapasco, Bernardo Strassburg, Birthe K. Paul, Alvaro Rincón, Rainer Schultze-Kraft, Steve Fonte, Timothy Searchinger Feb 2020

Challenges And Opportunities For Improving Eco-Efficiency Of Tropical Forage-Based Systems To Mitigate Greenhouse Gas Emissions, Michael Peters, Mario Herrero, Myles Fish, Karl-Heinz Erb, Idupulapati M. Rao, Guntur V. Subbarao, Aracely Castro, Jacobo Arango, Julian Chará, Enrique Murgueitio, Rein Van Der Hoek, Peter Läderach, Glenn Hyman, Jeimar Tapasco, Bernardo Strassburg, Birthe K. Paul, Alvaro Rincón, Rainer Schultze-Kraft, Steve Fonte, Timothy Searchinger

International Grassland Congress Proceedings

Forage-based livestock production plays a key role in national and regional economies, for food security and poverty alleviation. Livestock production is also considered as a major contributor to agricultural GHG emissions, however. While demand for livestock products is predicted to continue to increase, there is political and societal pressure both to reduce environmental impacts and to convert some of the pasture area to alternative uses such as crop production and environmental conservation. Thus it is essential to develop approaches for sustainable intensification of livestock systems to mitigate GHG emissions, addressing biophysical, socioeconomic and policy challenges. This paper highlights the potential ...


Maine's Climate Future: 2020 Update, Ivan J. Fernandez, Sean Birkel, Julia Simonson, Bradford Lyon, Andrew Pershing, Esperanza Stancioff, George L. Jacobson, Paul Andrew Mayewski Dr. Feb 2020

Maine's Climate Future: 2020 Update, Ivan J. Fernandez, Sean Birkel, Julia Simonson, Bradford Lyon, Andrew Pershing, Esperanza Stancioff, George L. Jacobson, Paul Andrew Mayewski Dr.

Climate Change Institute Faculty Scholarship

No abstract provided.


2020 Update Mtg: Climate Change Trends And Their Effects On Ecosystems Of Cape Cod National Seashore, Stephen Smith Jan 2020

2020 Update Mtg: Climate Change Trends And Their Effects On Ecosystems Of Cape Cod National Seashore, Stephen Smith

Cranberry Station Extension meetings

No abstract provided.


Local Adaptation Constrains Drought Tolerance In A Tropical Foundation Tree, Kasey E. Barton, Casey Jones, Kyle F. Edwards, Aaron B. Shiels, Tiffany Knight Jan 2020

Local Adaptation Constrains Drought Tolerance In A Tropical Foundation Tree, Kasey E. Barton, Casey Jones, Kyle F. Edwards, Aaron B. Shiels, Tiffany Knight

USDA National Wildlife Research Center - Staff Publications

  1. Plant species with broad climatic ranges might be more vulnerable to climate change than previously appreciated due to intraspecific variation in climatic stress tolerance. In tropical forests, drought is increasingly frequent and severe, causing widespread declines and altering community dynamics. Yet, little is known about whether foundation tropical trees vary in drought tolerance throughout their distributions, and how intraspecific variation in drought tolerance might contribute to their vulnerability to climate changE.
  2. We tested for local adaptation in seedling emergence and establishment with a full-factorial reciprocal transplant experiment including 27 populations and 109,350 seeds along a 3,500 mm precipitation ...


Understanding Global Change: From Documentation And Collaboration To Social Transformation, Karen E. Pennesi Jan 2020

Understanding Global Change: From Documentation And Collaboration To Social Transformation, Karen E. Pennesi

Anthropology Publications

The conclusion to the book situates the chapters within four programs of anthropological research on climate change: (1) documentation of local impacts of and adaptations to climate change, (2) connections to socioeconomic and political contexts, (3) collaborations with nonanthropologists, and (4) activism and social transformation. The final section notes the persistent challenges to creating positive change and meaningful research outcomes. It highlights some examples of success and outlines future directions for politically engaged anthropological work around climate change.


Sharp‐Tailed Grouse In The Nebraska Sandhills Select Residual Cover Patches For Nest Sites, William L. Vodehnal, Gregory L. Schenbeck, Daniel W, Uresk Jan 2020

Sharp‐Tailed Grouse In The Nebraska Sandhills Select Residual Cover Patches For Nest Sites, William L. Vodehnal, Gregory L. Schenbeck, Daniel W, Uresk

Nebraska Game and Parks Commission -- Staff Research Publications

We evaluated selection and availability of residual cover (dead standing herbage) by sharptailed grouse (Tympanuchus phasianellus) at time of nest‐site selection in an intact and annually grazed grassland. We used radiotelemetry in 1988–1990 to locate 147 nests in the sandhills of Nebraska, USA, and classified 121 as initial nests and 26 as renests. We used visual obstruction readings (VOR) to measure the height and density of residual cover at nests and 373 landscape‐scale transects around leks (trap sites). We excluded 77 nests from vegetation analysis because green herbage or early livestock grazing compromised residual cover measurements. Most ...


Metabolic Profiling Reveals Biochemical Pathways Responsible For Eelgrass Response To Elevated Co2 And Temperature, Carmen C. Zayas-Santiago, Albert Rivas-Ubach, Li-Jung Kuo, Nicholas D. Ward, Richard C. Zimmerman Jan 2020

Metabolic Profiling Reveals Biochemical Pathways Responsible For Eelgrass Response To Elevated Co2 And Temperature, Carmen C. Zayas-Santiago, Albert Rivas-Ubach, Li-Jung Kuo, Nicholas D. Ward, Richard C. Zimmerman

OEAS Faculty Publications

As CO2 levels in Earth’s atmosphere and oceans steadily rise, varying organismal responses may produce ecological losers and winners. Increased ocean CO2 can enhance seagrass productivity and thermal tolerance, providing some compensation for climate warming. However, the metabolic shifts driving the positive response to elevated CO2 by these important ecosystem engineers remain unknown. We analyzed whole-plant performance and metabolic profiles of two geographically distinct eelgrass (Zostera marina L.) populations in response to CO2 enrichment. In addition to enhancing overall plant size, growth and survival, CO2 enrichment increased the abundance of Calvin Cycle and nitrogen ...


Physiological Ecology Of Overwintering And Cold-Adapted Arthropods, Leslie Jean Potts Jan 2020

Physiological Ecology Of Overwintering And Cold-Adapted Arthropods, Leslie Jean Potts

Theses and Dissertations--Entomology

Given their abundance and diversity, arthropods are an excellent system to investigate biological responses to winter. Winter conditions are being majorly impacted by climate change, and therefore understanding the overwintering biology of arthropods is critical for predicting ecological responses to climate change. In Chapters 2 and 3, I investigate the winter biology of a winter-active wolf spider. I show that winter-active spiders can take advantage of periodic prey resources and grown in the winter, which may allow them to get a jumpstart on spring reproduction. I also investigate spiders’ ability to track changes in their environment by quantifying low temperature ...


A Troop, A Raft, A Bed, Hanna Jane Guendel Jan 2020

A Troop, A Raft, A Bed, Hanna Jane Guendel

Senior Projects Spring 2020

A Troop, a Raft, a Bed tells the interwoven fictional stories of three major animals (the mountain gorilla, the Adélie penguin, and the American eel) and four transitional animals (the white stork, the humpback whale, the common octopus, and the great white shark). The stories are told from the animals' perspectives, and are written with language that considers each animal's unique intelligence, mind, and behavior. These stories seek to communicate how animals around the world may be experiencing the various effects of climate change and global warming.


Standardized Short-Term Acute Heat Stress Assays Resolve Historical Differences In Coral Thermotolerance Across Microhabitat Reef Sites, Christian R. Voolstra, Carol Buitrago-López, Gabriela Perna, Anny Cárdenas, Benjamin C. C. Hume, Nils Rädecker, Daniel J. Barshis Jan 2020

Standardized Short-Term Acute Heat Stress Assays Resolve Historical Differences In Coral Thermotolerance Across Microhabitat Reef Sites, Christian R. Voolstra, Carol Buitrago-López, Gabriela Perna, Anny Cárdenas, Benjamin C. C. Hume, Nils Rädecker, Daniel J. Barshis

Biological Sciences Faculty Publications

Coral bleaching is one of the main drivers of reef degradation. Most corals bleach and suffer mortality at just 1–2°C above their maximum monthly mean temperatures, but some species and genotypes resist or recover better than others. Here, we conducted a series of 18‐hr short‐term acute heat stress assays side‐by‐side with a 21‐day long‐term heat stress experiment to assess the ability of both approaches to resolve coral thermotolerance differences reflective of in situ reef temperature thresholds. Using a suite of physiological parameters (photosynthetic efficiency, coral whitening, chlorophyll a , host protein, algal symbiont ...


Potential Effects Of Climate Change On The Geographic Distribution Of The Endangered Plant Species Manihot Walkerae, Gisel Garza, Armida Rivera, Crystian Sadel Venegas Barrera, Jose Guadalupe Martinez-Avalos, Teresa Patricia Feria-Arroyo Jan 2020

Potential Effects Of Climate Change On The Geographic Distribution Of The Endangered Plant Species Manihot Walkerae, Gisel Garza, Armida Rivera, Crystian Sadel Venegas Barrera, Jose Guadalupe Martinez-Avalos, Teresa Patricia Feria-Arroyo

Biology Faculty Publications and Presentations

Walker’s Manihot, Manihot walkerae, is an endangered plant that is endemic to the Tamaulipan thornscrub ecoregion of extreme southern Texas and northeastern Mexico. M. walkerae populations are highly fragmented and are found on both protected public lands and private property. Habitat loss and competition by invasive species are the most detrimental threats for M. walkerae; however, the effect of climate change on M. walkerae’s geographic distribution remains unexplored and could result in further range restrictions. Our objectives are to evaluate the potential effects of climate change on the distribution of M. walkerae and assess the usefulness of natural ...


Effects Of Multiple Stressors: Hydroperiod, Introduced Bullfrogs, And Food Limitation On Northern Red-Legged Frogs (Rana Aurora), Lindsey L. Gordon Jan 2020

Effects Of Multiple Stressors: Hydroperiod, Introduced Bullfrogs, And Food Limitation On Northern Red-Legged Frogs (Rana Aurora), Lindsey L. Gordon

HSU theses and projects

As human activities reach every corner of the globe, climate change, invasive species, habitat destruction, and other stressors causing species’ declines no longer act alone. Climate change has the potential to exacerbate (or mitigate) other stressors (e.g. invasive species or pathogens) affecting amphibian populations. I assessed the combined effects of increased pond drying rates (potential impact of climate change), invasive bullfrogs (Lithobates catesbeianus) presence, and food availability on northern red-legged frog (Rana aurora) survival and body size after metamorphosis by rearing tadpoles under incrementally shortened hydroperiods with and without the presence of invasive bullfrog tadpoles in low and high ...


The Ability Of Fragmented Kelp Forests To Mitigate Ocean Acidification And The Effects Of Seasonal Upwelling On Kelp-Purple Sea Urchin Interactions, Kindall A. Murie Jan 2020

The Ability Of Fragmented Kelp Forests To Mitigate Ocean Acidification And The Effects Of Seasonal Upwelling On Kelp-Purple Sea Urchin Interactions, Kindall A. Murie

HSU theses and projects

Bull kelp (Nereocystis leutkeana) forests along the coast for northern California have decreased dramatically as a result of a ‘perfect storm’ of multiple environmental stressors. The disappearance of a predatory sea star and subsequent increase in purple sea urchins (Strongylocentrotus purpuratus) and the recurrence of marine heat waves have caused these once diverse ecosystems to be rapidly converted into relative species-depauperate urchin barrens. By examining the interactive effects of both a rapidly changing abiotic environment and the increase in urchin grazing pressure that is affecting this vital ecosystem, we can better understand its ultimate fate and make better-informed decisions to ...


No Evidence Of Fine Scale Thermal Adaption In Green Turtles, Taylor Apter Jan 2020

No Evidence Of Fine Scale Thermal Adaption In Green Turtles, Taylor Apter

Scientific Communications News

No abstract provided.


Assessing The Hierarchy Of Long-Term Environmental Controls On Diatom Communities Of Yellowstone National Park Using Lacustrine Sediment Records, Victoria Chraibi, Sherilyn C. Fritz Jan 2020

Assessing The Hierarchy Of Long-Term Environmental Controls On Diatom Communities Of Yellowstone National Park Using Lacustrine Sediment Records, Victoria Chraibi, Sherilyn C. Fritz

Papers in the Earth and Atmospheric Sciences

An ecosystem’s ability to maintain structure and function following disturbance, defined as resilience, is influenced by a hierarchy of environmental controls, including climate, surface cover, and ecological relationships that shape biological community composition and productivity. This study examined lacustrine sediment records of naturally fishless lakes in Yellowstone National Park to reconstruct the response of aquatic communities to climate and trophic cascades from fish stocking. Sediment records of diatom algae did not exhibit a distinct response to fish stocking in terms of assemblage or algal productivity. Instead, 3 of 4 lakes underwent a shift to dominance by benthic diatom species ...


Investigating The Effects Of Climate Co-Stressors On Surf Smelt Energy Demands, Megan Russell Jan 2020

Investigating The Effects Of Climate Co-Stressors On Surf Smelt Energy Demands, Megan Russell

WWU Graduate School Collection

Surf smelt (Hypomesus pretiosus) are ecologically and economically important to the Pacific Northwest. They play a critical role in the food web and support numerous commercially important species and are an economically important baitfish. Surf smelt interact closely with the nearshore environment, utilizing approximately 10% of Puget Sound coastlines for spawning throughout the year. Surf smelt spawn at high tide and adhere fertilized eggs to beach sediment, causing their embryos to be exposed to air and seawater throughout embryonic development. Because of this unique life history, surf smelt may be susceptible to anthropogenic stressors including coastal development and climate change ...


Modeling The Effects Of Global Change On Ecosystem Processes In A Tropical Rainforest, Ann E. Russell, William J. Parton Jr. Jan 2020

Modeling The Effects Of Global Change On Ecosystem Processes In A Tropical Rainforest, Ann E. Russell, William J. Parton Jr.

Natural Resource Ecology and Management Publications

Research Highlights: Ongoing land-use change and climate change in wet tropical forests can potentially drive shifts in tree species composition, representing a change in individual species within a functional group, tropical evergreen trees. The impacts on the global carbon cycle are potentially large, but unclear. We explored the differential effects of species within this functional group, in comparison with the effects of climate change, using the Century model as a research tool. Simulating effects of individual tree species on biome-level biogeochemical cycles constituted a novel application for Century. Background and Objectives: A unique, long-term, replicated field experiment containing five evergreen ...


Organic Chemistry Insights For The Exceptional Soil Carbon Storage Of The Seagrass Posidonia Australis, Oscar Serrano, Mohammad Rozaimi, Paul Lavery, Ronald J. Smernik Jan 2020

Organic Chemistry Insights For The Exceptional Soil Carbon Storage Of The Seagrass Posidonia Australis, Oscar Serrano, Mohammad Rozaimi, Paul Lavery, Ronald J. Smernik

ECU Publications Post 2013

The high organic carbon (OC) stores in seagrass meadows have led to their recognition as significant Blue Carbon sinks, though the diagenetic conditions that enable OC retention in seagrass soils remain poorly understood. In this study, seagrass soils were sampled from a Posidonia australis meadow in Oyster Harbour (Albany; south-western Australia) to investigate the preservation of sedimentary OC. We analysed soil characteristics (colour, grain size and redox potential), radiocarbon age, and characterised the soil organic matter (OM) using solid state CP/MAS 13C NMR spectroscopy to examine the preservation of OM down the soil profile. There was minimal change in ...


Vulnerability Of High-Elevation Endemic Salamanders To Climate Change: A Case Study With The Cow Knob Salamander (Plethodon Punctatus), Carl D. Jacobsen, Donald J. Brown, William D. Flint, Thomas K. Pauley, Kurt A. Buhlmann, Joseph C. Mitchell Jan 2020

Vulnerability Of High-Elevation Endemic Salamanders To Climate Change: A Case Study With The Cow Knob Salamander (Plethodon Punctatus), Carl D. Jacobsen, Donald J. Brown, William D. Flint, Thomas K. Pauley, Kurt A. Buhlmann, Joseph C. Mitchell

Faculty & Staff Scholarship

Rapid contemporary climate change is a potential threat to long-term persistence of montane wildlife species because they often have narrow thermal tolerances and have limited potential to shift their distributions. The Appalachian Mountain region in the eastern United States is a global biodiversity hotspot for woodland salamanders (genus Plethodon), many of which are high-elevation endemic species. Robust assessments of the vulnerability of high-elevation endemic salamanders to climate change, including delineation of future potential climate refugia, are needed to guide climate change adaptations strategies. The Cow Knob Salamander (Plethodon punctatus) is a species of conservation concern found at high elevations in ...


The Impact Of Climate Change On The Migration Phenology Of New England’S Anadromous River Herring And American Shad, Charles K. Cobb Jan 2020

The Impact Of Climate Change On The Migration Phenology Of New England’S Anadromous River Herring And American Shad, Charles K. Cobb

Honors Theses

Anadromous fish play important roles in food webs and nutrient cycling in both aquatic and marine ecosystems. As a result of climate change however, anadromous fish’s migration timing has begun to change, with potentially deleterious consequences to both anadromous fish, and the species that depend on them. Western coastal US studies have linked earlier anadromous fish returns to warming marine temperatures and changes in river flow regimes, but the exact temperatures thresholds that anadromous fish respond to, and the relative importance of temperatures and river flows, remain somewhat unknown. Additionally, there has been relatively little research on anadromous fish ...


Seed Source Regions Drive Fitness Differences In Invasive Macrophytes, Morgane B. Gillard, Rebecca E. Drenovsky, Gabrielle Thiébaut, Michèle Tarayre, Caryn J. Futrell, Brenda J. Grewell Jan 2020

Seed Source Regions Drive Fitness Differences In Invasive Macrophytes, Morgane B. Gillard, Rebecca E. Drenovsky, Gabrielle Thiébaut, Michèle Tarayre, Caryn J. Futrell, Brenda J. Grewell

2020 Faculty Bibliography

Premise Worldwide, ecosystems are threatened by global changes, including biological invasions. Invasive species arriving in novel environments experience new climatic conditions that can affect their successful establishment. Determining the response of functional traits and fitness components of invasive populations from contrasting environments can provide a useful framework to assess species responses to climate change and the variability of these responses among source populations. Much research on macrophytes has focused on establishment from clonal fragments; however, colonization from sexual propagules has rarely been studied. Our objective was to compare trait responses of plants generated from sexual propagules sourced from three climatic ...


Gulf Coast Marine Laboratories Past, Present And Future, Donald F. Boesch Jan 2020

Gulf Coast Marine Laboratories Past, Present And Future, Donald F. Boesch

Gulf and Caribbean Research

I spent my nearly 50—year career in marine science working at marine laboratories, most of that as a chief executive officer. So, it is appropriate that my reflections are about marine laboratories, rather than my own science. After relating my career course, I turn my attention to the history and development of marine laboratories along the U.S. coast of the Gulf of Mexico (GOM). Surprisingly, the region’s first laboratory was actually constructed in 1903 at Cameron, LA, but operated less than a decade before closing. It was not until after World War II that the university—affiliated ...