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Full-Text Articles in Physical Sciences and Mathematics

Human–Wildlife Conflict And Coexistence, Philip J. Nyhus Dec 2015

Human–Wildlife Conflict And Coexistence, Philip J. Nyhus

Philip J. Nyhus

Human interactions with wildlife are a defining experience of human existence. These interactions can be positive or negative. People compete with wildlife for food and resources, and have eradicated dangerous species; co-opted and domesticated valuable species; and applied a wide range of social, behavioral, and technical approaches to reduce negative interactions with wildlife. This conflict has led to the extinction and reduction of numerous species and uncountable human deaths and economic losses. Recent advances in our understanding of conflict have led to a growing number of positive conservation and coexistence outcomes. I summarize and synthesize factors that contribute to conflict, …


Day 1: Wednesday, 17 August 2005: Biodiversity And Critical Habitat, Charles Bedford, Federico Cheever, Tim Sullivan Jun 2015

Day 1: Wednesday, 17 August 2005: Biodiversity And Critical Habitat, Charles Bedford, Federico Cheever, Tim Sullivan

Tim Sullivan

6 pages (includes color illustration). Contains references.


Economics Of The Queensland Mud Crab Fishery, Tor Hundloe Jan 2015

Economics Of The Queensland Mud Crab Fishery, Tor Hundloe

Tor Hundloe

A series of analyses of catch-effort data from compulsory commercial logbooks and from the Department’s Long-Term Monitoring Programme (LTMP) were conducted after the Workshop. Although not part of the Project plan, these were initiated as a result of questions arising from the Workshop participants about the reliability of the data used in the simulation modelling. Exploration of the logbook data and results of the analyses suggest that biases in the data (from a variety of sources, but principally the widespread use of more than the permitted number of pots) may be giving an over-optimistic view of the status of the …


An Assessment Of South China Tiger Reintroduction Potential In Hupingshan And Houhe National Nature Reserves, China, Yiyuan Qin, Philip J. Nyhus, Courtney L. Larson, Charles J.W. Carroll, Jeff Muntifering, Thomas D. Dahmer, Lu Jun, Ronald L. Tilson Dec 2014

An Assessment Of South China Tiger Reintroduction Potential In Hupingshan And Houhe National Nature Reserves, China, Yiyuan Qin, Philip J. Nyhus, Courtney L. Larson, Charles J.W. Carroll, Jeff Muntifering, Thomas D. Dahmer, Lu Jun, Ronald L. Tilson

Philip J. Nyhus

Human-caused biodiversity loss is a global problem, large carnivores are particularly threatened, and the tiger (Panthera tigris) is among the world’s most endangered large carnivores. The South China tiger (Panthera tigris amoyensis) is the most critically endangered tiger subspecies and is considered functionally extinct in the wild. The government of China has expressed its intent to reintroduce a small population of South China tigers into a portion of their historic range as part of a larger goal to recover wild tiger populations in China. This would be the world’s first major tiger reintroduction program. A free-ranging population of 15–20 tigers …


Interactions Between Short-Beaked Common Dolphin (Delphinus Delphis) And The Winter Pelagic Pair-Trawl Fishery Ff Southwest England (Uk), Marijke N. De Boer, James T. Saulino, Mardik F. Leopold, Peter J.H. Reijnders, Mark P. Simmonds Dec 2014

Interactions Between Short-Beaked Common Dolphin (Delphinus Delphis) And The Winter Pelagic Pair-Trawl Fishery Ff Southwest England (Uk), Marijke N. De Boer, James T. Saulino, Mardik F. Leopold, Peter J.H. Reijnders, Mark P. Simmonds

Mark P. Simmonds, OBE

During offshore and onshore studies (2004 to 2009), the interactions between pair-trawls and short-beaked common dolphins (Delphinus delphis) were studied to better understand the impact of bycatch. A ‘hotspot’ area where pair-trawls overlapped with high dolphin abundance was identified. We made comparisons between boat-based data collected in absence and presence of pair-trawlers. The relative abundance and group-size of dolphins was significantly higher in the presence of pair-trawlers. Dolphins were observed associating with towing and hauling procedures. Significantly, more carcasses occurred in areas with hauling-activity than those without. Body-temperatures obtained from carcasses found near operating pair-trawlers indicated that bycatch mostly occurred …


What Can We Learn From Confusing Olivella Columellaris And O. Semistriata (Olivellidae, Gastropoda), Two Key Species In Panamic Sandy Beach Ecosystems?, Allison I. Troost, Samantha D. Rupert, Ariel Z. Cyrus, Frank V. Paladino, Benjamin F. Dattilo, Winfried S. Peters Jul 2014

What Can We Learn From Confusing Olivella Columellaris And O. Semistriata (Olivellidae, Gastropoda), Two Key Species In Panamic Sandy Beach Ecosystems?, Allison I. Troost, Samantha D. Rupert, Ariel Z. Cyrus, Frank V. Paladino, Benjamin F. Dattilo, Winfried S. Peters

Benjamin F. Dattilo

Olivella columellaris (Sowerby 1825) and O. semistriata (Gray 1839) are suspension-feeding, swash-surfing snails on tropical sandy beaches of the east Pacific. While they often are the numerically dominant macrofaunal element in their habitats, their biology is poorly understood; the two species actually have been confused in all of the few publications that address their ecology. Frequent misidentifications in publications and collections contributed also to an overestimation of the geographic overlap of the two species. To provide a sound taxonomic basis for further functional, ecological, and evolutionary investigations, we evaluated the validity of diagnostic traits in wild populations and museum collections, …


The Salters Of Stanley Brook, Catherine V. Schmitt Mar 2014

The Salters Of Stanley Brook, Catherine V. Schmitt

Catherine Schmitt

No abstract provided.


Sweet Sorghum As A Bioenergy Crop: Literature Review, Teshome Regassa Dec 2013

Sweet Sorghum As A Bioenergy Crop: Literature Review, Teshome Regassa

Teshome H. Regassa

No abstract provided.


The World’S Deepest Subterranean Community - Krubera-Voronja Cave (Western Caucasus), Alberto Sendra, Ana Sofia P.S. Reboleira Jun 2013

The World’S Deepest Subterranean Community - Krubera-Voronja Cave (Western Caucasus), Alberto Sendra, Ana Sofia P.S. Reboleira

Ana Sofia P.S. Reboleira

Subsurface biota extends over a wide variety of habitats that can be spatially interconnected. The largest communities of this subsurface biota inhabit cavities and are well known mainly in caves where biologists are able to have access. Data about deep subterranean communities and arthropods living under one thousand meters was unknown. An expedition to world’s deepest cave, Krubera-Voronja in Western Caucasus, revealed an interesting subterranean community, living below 2000 meters and represented by more than 12 species of arthropods, including several new species for science. This deep cave biota is composed of troglobionts and also epigean species, that can penetrate …


Sharing A Vision For Biodiversity Conservation And Agriculture, John Quinn Dec 2012

Sharing A Vision For Biodiversity Conservation And Agriculture, John Quinn

John E Quinn

No abstract provided.


Statistical Research For The Kearny Marsh, Manfred Minimair, Juliana Newman Mar 2012

Statistical Research For The Kearny Marsh, Manfred Minimair, Juliana Newman

Manfred Minimair

Experimental data about the biological environment of the Kearny marsh, New Jersey, USA, is studied.


The Effects Of Land Sparing And Wildlife-Friendly Practices On Grassland Bird Abundance Within Organic Farmlands, John Quinn Dec 2011

The Effects Of Land Sparing And Wildlife-Friendly Practices On Grassland Bird Abundance Within Organic Farmlands, John Quinn

John E Quinn

No abstract provided.


Spatial Distribution Of Commercial Banks In Ilorin Metropolis, Kwara State, Nigeria, I B. Abdullahi, M A. Ijaiya, A Abdulraheem, R I. Abdulkadir, R O. Ibrahim Jan 2011

Spatial Distribution Of Commercial Banks In Ilorin Metropolis, Kwara State, Nigeria, I B. Abdullahi, M A. Ijaiya, A Abdulraheem, R I. Abdulkadir, R O. Ibrahim

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

The spatial distribution of banks in any geographic entity determines the level of accessibility to its services by the public. This study examined the pattern of banks distribution in Ilorin metropolis. Field survey was employed in determining the number of available commercial banks and their respective distances between each other. The spatial analysis technique such as the nearest neighbour analysis as used ascertain the degree of clustering, density and the average distance taken to access these services. The study revealed that about 96% of the total number of banks are situated in the Central Business District which exhibited a very …


Modeling The Status And Threats To The Philippine Eagle In The Eastern Mindanao Biodiversity Corridor, Vicente Calag, Sean Fitzgerald, James Hafner, Jayson Ibanez, Alicia Johnson, Don Sluter Dec 2008

Modeling The Status And Threats To The Philippine Eagle In The Eastern Mindanao Biodiversity Corridor, Vicente Calag, Sean Fitzgerald, James Hafner, Jayson Ibanez, Alicia Johnson, Don Sluter

James A Hafner

The Philippines is among the most endemic-rich areas for all global biodiversity hotspots. Conserving that biodiversity presents multi-scaled challenges including the critical need for habitat and species level documentation as a basis for identifying conservation targets. This paper contributes to that need by describing the use of A Composite Bio-geographic Analysis (CBA) model to model the dynamics and inter-relationships between species distribution, nest, habitat and land use change, population distribution and access to the PA and to synthesize and evaluate data on the status and threats to the Philippine Eagle Pithecophaga jefferyi in the Mt. Hamiguitan Protected Area, one of …


Biogeographical Distribution And Natural Groupings Among Five Sympatric Wild Cats In Tropical South Asia, Mohammed Ashraf Oct 2007

Biogeographical Distribution And Natural Groupings Among Five Sympatric Wild Cats In Tropical South Asia, Mohammed Ashraf

Mohammed Ashraf

Small to large carnivorous mammals in the tropical belt face extinction at an unprecedented rate. The vanishing of sympatric wild cats appears to be due to habitat fragmentation, human encroachment & poaching. The focus of this study is on ecological and distributional parameters that influence the wild cat communities in tropical South Asia. The distributional data for five sympatric cats is analyzed with the aim of understanding the species-habitat association under a conceptually unified binary-matrix framework. The use of cluster analysis techniques in this ecological study have helped to reveal the natural groupings among felid guilds and their ecological resource …


Land Cover Classification And Economic Assessment Of Citrus Groves Using Remote Sensing, Jennifer Gebelein Jan 2007

Land Cover Classification And Economic Assessment Of Citrus Groves Using Remote Sensing, Jennifer Gebelein

Jennifer Gebelein

The citrus industry has the second largest impact on Florida's economy, following tourism. Estimation of citrus area coverage and annual forecasts of Florida's citrus production are currently dependent on labor-intensive interpretation of aerial photographs. Remotely sensed data from satellites has been widely applied in agricultural yield estimation and cropland management. Satellite data can potentially be obtained throughout the year, making it especially suitable for the detection of land cover change in agriculture and ...


How Earth Remote Sensing From The International Space Station Complements Current Satellite‐Based Sensors, Jennifer Gebelein, Dean Eppler Jul 2006

How Earth Remote Sensing From The International Space Station Complements Current Satellite‐Based Sensors, Jennifer Gebelein, Dean Eppler

Jennifer Gebelein

The International Space Station (ISS) will provide an Earth‐and space‐observing platform that will support sensors built by 16 different countries and deliver data and images for local, regional and global research. When complete, it will be an exceptional platform for conducting remote sensing of the Earth, astrophysics, and space physics research programmes. Additionally, the ISS will operate as a testbed for engineering studies and complex technological developments that will benefit future Earth‐observing capabilities. ...