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Articles 1 - 30 of 1330
Full-Text Articles in Entire DC Network
Visitor Perceptions Of Lampenflora And Implications For Adaptive Show Cave Management: A Case Study From Ryusen-Do Cave, Japan, Kanato Ando, Kazuhide Nakajima, Shuji Watanabe, Masuo Komukai, Hidesato Kuwahara
Visitor Perceptions Of Lampenflora And Implications For Adaptive Show Cave Management: A Case Study From Ryusen-Do Cave, Japan, Kanato Ando, Kazuhide Nakajima, Shuji Watanabe, Masuo Komukai, Hidesato Kuwahara
International Journal of Speleology
Artificial lighting in show caves promotes lampenflora growth, altering cave ecosystems and posing persistent management challenges. Although various control methods have been proposed, their effectiveness and social acceptance remain context dependent. This study investigated visitors’ perceptions of lampenflora through questionnaire surveys and semi-structured interviews to explore adaptive management strategies. Results indicated that visitors generally held positive impressions of lampenflora, but these impressions became more critical after receiving information about its artificial origin and ecological impacts. At the same time, support for conservation-oriented management, including willingness to contribute financially, tended to increase following information provision. Tourism-related evaluations were more strongly associated …
Seabirds As Ecosystem Engineers: Providing Arthropod Habitat On Oceanic Islands., Kanon Mizukoshi, Kazuto Kawakami, Takashi Kamijo
Seabirds As Ecosystem Engineers: Providing Arthropod Habitat On Oceanic Islands., Kanon Mizukoshi, Kazuto Kawakami, Takashi Kamijo
Marine Ornithology
Seabirds play several important ecological roles on oceanic islands through their high-density breeding. Their ecosystem functions—such as nutrient cycling through excretion or terrestrial vegetation disturbance through trampling—are well known; however, little is known of their roles as ecosystem engineers. Nests and burrows can be densely concentrated in seabird colonies, by which seabirds can affect adjacent terrestrial ecosystems, especially affecting arthropods that use these structures as food or habitats. However, studies investigating the species composition of arthropods that inhabit seabird nests are limited. To characterize the arthropod faunas in seabird nests, this study surveyed and analyzed 90 nests of three seabird …
Seasonal Variation In Trophic Niche And Resource Use In Great Black-Backed Gulls Larus Marinus., Samuel Langlois Lopez, Nina J. O’Hanlon, Jared Wilson, Rona A. R. Mcgill, Francis Daunt, Elizabeth A. Masden
Seasonal Variation In Trophic Niche And Resource Use In Great Black-Backed Gulls Larus Marinus., Samuel Langlois Lopez, Nina J. O’Hanlon, Jared Wilson, Rona A. R. Mcgill, Francis Daunt, Elizabeth A. Masden
Marine Ornithology
Seabirds experience variable extrinsic and intrinsic pressures throughout the annual cycle that affect their ability to forage. Consequently, their foraging strategies may vary between breeding and non-breeding seasons due to the constraints of central-place foraging during the former. Here, we studied a population of a generalist seabird, the Great Black-backed Gull Larus marinus, breeding at a colony on the Isle of May, Scotland. We quantified seasonal variation in sexual segregation, trophic position, trophic niche width, and resource use by examining stable isotopes in feathers collected from adults. We found no sexual segregation, but we detected population- and individual-level shifts …
Light-Driven Zonation And Community Structure Of Aerophytic Microalgae In A Tropical Limestone Cave (Gua Tempurung, Malaysia), Wan Maznah Wan Omar, Mohammad Basri Eshak, Luthfiana Aprilianita Sari, Zulaihat Hamza Abdullahi, Yusuf Abdullahi
Light-Driven Zonation And Community Structure Of Aerophytic Microalgae In A Tropical Limestone Cave (Gua Tempurung, Malaysia), Wan Maznah Wan Omar, Mohammad Basri Eshak, Luthfiana Aprilianita Sari, Zulaihat Hamza Abdullahi, Yusuf Abdullahi
International Journal of Speleology
Cave ecosystems host specialized phototrophic biofilms structured primarily by light availability, yet quantitative assessments of aerophytic microalgal community organization in tropical limestone caves remain limited. This study investigated spatial variation in the structure of aerophytic microalgal communities across four ecologically distinct zones (entrance, transition, penetration, and low light) of Gua Tempurung, Malaysia. Stratified sampling was conducted during three seasonal periods. Dominant phototrophic morphospecies were identified using microscopy, and community composition was analyzed in relation to key environmental variables. Twenty-three dominant microalgal morphospecies were recorded across the cave gradient. Cyanobacteria constituted the major component of both richness and abundance, followed by …
Prosocial Behaviors As A Protective Factor Against Suicide Risk: An Ecological Momentary Assessment Approach, Bradley A. Brown
Prosocial Behaviors As A Protective Factor Against Suicide Risk: An Ecological Momentary Assessment Approach, Bradley A. Brown
USF Tampa Graduate Theses and Dissertations
Suicidal ideation (SI) fluctuates substantially over short timescales, and the Interpersonal Theory of Suicide proposes that suicidal thinking emerges through dynamic interpersonal states involving perceived burdensomeness (PB), thwarted belongingness (TB), and hopelessness regarding these interpersonal states (IH). Although ecological momentary assessment (EMA) research has demonstrated that these risk factors fluctuate meaningfully within individuals and are associated with short-term changes in SI, comparatively little research has examined interpersonal processes that may attenuate suicide risk in real time. Prosocial behavior — voluntary actions intended to benefit others — may represent one such process, yet no known EMA study has examined whether prosocial …
The University Of Guelph’S Arboretum Winter Bird Count, 1980-2022, Brandon P.M. Edwards, Alan P. Watson, Chris G. Earley
The University Of Guelph’S Arboretum Winter Bird Count, 1980-2022, Brandon P.M. Edwards, Alan P. Watson, Chris G. Earley
Ontario Birds
No abstract provided.
Common Gallinule Banding In Ontario, Ross W. Wood, Barbara A. Campbell, Shawn W. Meyer, Tore Buchanan
Common Gallinule Banding In Ontario, Ross W. Wood, Barbara A. Campbell, Shawn W. Meyer, Tore Buchanan
Ontario Birds
Between 2012 and 2017, we conducted a Common Gallinule banding study to determine the feasibility of catching and banding gallinule with an airboat in Ontario, estimate how many birds could potentially be banded and subsequently encountered, calculate an index of productivity and assess whether enough data could be obtained to inform management decisions and conservation planning. We captured gallinules using dip nets and spotlights at night from an airboat. In total, we banded 440 (approximately 28%) of the 1,564 gallinules that have ever been banded in Ontario. Five of our banded birds were subsequently encountered, four within Ontario and one …
A Political Ecological Exploration Of The Caracol Road Project In Belize, Lorenzo A. Pantano
A Political Ecological Exploration Of The Caracol Road Project In Belize, Lorenzo A. Pantano
USF Tampa Graduate Theses and Dissertations
The Caracol Road Project is a new BZ$148,100,000 (US$74,050,000) road infrastructure development in the Cayo District of Belize and financed largely by foreign sovereign wealth funds. The areas adjacent to the road, broken into two phases include: communities, forest reserves, national parks, recreational areas, private lands and estates, and archaeological sites. This paper seeks to ask the questions: (i) For whom is the CRP being developed? (ii) For what is the CRP being developed? (iii) What visual evidence exists of sacrifice zones because of the production of the CRP? I sought to answer these questions through ethnographic observations, interviews, and …
Recent Literature, Claire Stuyck
Full Issue, North American Bird Bander
Full Issue, North American Bird Bander
North American Bird Bander
No abstract provided.
Feeding Niche Overlap And Segregation Among Three Grouse Species Wintering In Hudson Bay Lowlands Of Northern Ontario, Vernon G. Thomas
Feeding Niche Overlap And Segregation Among Three Grouse Species Wintering In Hudson Bay Lowlands Of Northern Ontario, Vernon G. Thomas
Ontario Birds
The Hudson Bay Lowlands of northern Ontario (comprising tundra and taiga) provide winter habitats for Willow Ptarmigan and Sharp-tailed Grouse as well as Rock Ptarmigan that occasionally fly in from arctic and subarctic regions. Winter food niche segregation/overlap was measured among these three species to investigate potential feeding competition; tamarack and berries were quantified by number and mass in the crops of grouse collected from the vicinity of the former community of Winisk, Ontario (now Peawanuck). All grouse species fed on birch and it was the principal food for Sharp-tailed Grouse. Willow was eaten primarily by Willow and Rock Ptarmigan. …
Coastal Bird Community Change Following An Increase Of Pinnipeds At A Site In Northern Argentina: A 14-Year Study, María Paula Berón, Maximiliano Manuel Hernandez, Juan Pablo Seco Pon
Coastal Bird Community Change Following An Increase Of Pinnipeds At A Site In Northern Argentina: A 14-Year Study, María Paula Berón, Maximiliano Manuel Hernandez, Juan Pablo Seco Pon
Marine Ornithology
We report here changes in bird assemblages over a 14-year interval at the Port of Mar del Plata, Argentina, and the adjacent beach before (PRE) and after (POST) South American Sea Lions Otaria flavescens increased at a local haul-out. Abundance and number of bird species were compared between periods, between sites (beach, sea lion rookery, and port sheds), and between breeding and non-breeding seasons of the birds’ annual cycle. A total of 13 116 birds belonging to 15 species were recorded. Total bird abundance was higher during the POST period compared to the PRE period, regardless of the season. Larids …
Characterizing The Diet Of A Threatened Seabird, The Marbled Murrelet Brachyramphus Marmoratus, Using High-Throughput Sequencing, Emily D. Fountain, Paige J. Kulzer, Richard T. Golightly, James W. Rivers, Scott F. Pearson, Martin G. Raphael, Matthew G. Betts, S. Kim Nelson, Daniel D. Roby, Nicholas F. Kryshak, Stephanie Schneider, M. Zachariah Peery
Characterizing The Diet Of A Threatened Seabird, The Marbled Murrelet Brachyramphus Marmoratus, Using High-Throughput Sequencing, Emily D. Fountain, Paige J. Kulzer, Richard T. Golightly, James W. Rivers, Scott F. Pearson, Martin G. Raphael, Matthew G. Betts, S. Kim Nelson, Daniel D. Roby, Nicholas F. Kryshak, Stephanie Schneider, M. Zachariah Peery
Marine Ornithology
Understanding prey consumption patterns is critical to understanding the ways in which seabirds cope with a changing ocean. However, characterizing the dietary habitats of seabirds can be challenging. In this study, we investigated the diet of the Marbled Murrelet Brachyramphus marmoratus population that lives in waters off California, Oregon, and Washington, USA, using fecal DNA, custom metabarcoding, and high-throughput sequencing. Murrelets were captured at sea by dip-netting at night. Across this region, murrelets consumed highly diverse prey types including 17 fish species and 10 invertebrate species, in accord with previous work indicating the species’ forage on a wide range of …
Breeding Microhabitat Patterns Among Sympatric Tropical Larids, Antonio Garcia-Quintas, Dennis Denis, Christophe Barbraud, Sophie Lanco Bertrand
Breeding Microhabitat Patterns Among Sympatric Tropical Larids, Antonio Garcia-Quintas, Dennis Denis, Christophe Barbraud, Sophie Lanco Bertrand
Marine Ornithology
The selection of breeding microhabitat (nesting sites) affects successful reproduction in seabirds, yet the process of nesting-site selection in sympatric tropical species remains poorly known. During the 2021 breeding season, we assessed nesting-site selection among five larid species at three cays of Cuba and quantified explanatory variables. Random forest classification models were used to assess which landscape features among eight variables best explained site selection by each species. Patterns were clear for most species, especially the highly gregarious Roseate Tern Sterna dougallii, Royal Tern Thalasseus maximus, and Sandwich Tern T. sandvicensis. Patterns were consistent among the study cays. Dominant plant …
The Potential Of Ecologists To Enhance Our Understanding Of Seabird Health, Melanie R. Wells, Annie Philips, Mary-Anne Lea, Scott Carver
The Potential Of Ecologists To Enhance Our Understanding Of Seabird Health, Melanie R. Wells, Annie Philips, Mary-Anne Lea, Scott Carver
Marine Ornithology
Ecologists play a pivotal role in the detection and investigation of population changes in seabirds and by doing so have significant potential to contribute to enhancing knowledge of seabird health. This review highlights key examples in the literature where ecologists have employed diligent passive health surveillance and/or undertaken targeted investigations of seabirds, strategies that have augmented our knowledge of seabird health at individual and population levels. Within the context of One Health, an integrated approach to perceiving and managing health, this review amalgamates veterinarian and ecology disciplines by summarising auxiliary metrics of clinical health that may be considered for incorporation …
The Influence Of Breeding Status And Nest Site Location On Marine Habitat Use By Marbled Murrelet Brachyramphus Marmoratus, Sonya A. Pastran, David B. Lank, Patrick D. O’Hara, Russell W. Bradley, Cecilia Lougheed, Lynn W. Lougheed, Nadine R. Parker, Laura A. Mcfarlane Tranquilla, Elizabeth A. Krebs, Fred Cooke, Douglas F. Bertram
The Influence Of Breeding Status And Nest Site Location On Marine Habitat Use By Marbled Murrelet Brachyramphus Marmoratus, Sonya A. Pastran, David B. Lank, Patrick D. O’Hara, Russell W. Bradley, Cecilia Lougheed, Lynn W. Lougheed, Nadine R. Parker, Laura A. Mcfarlane Tranquilla, Elizabeth A. Krebs, Fred Cooke, Douglas F. Bertram
Marine Ornithology
The Marbled Murrelet Brachyramphus marmoratus is a threatened seabird that relies on old-growth forest for nesting. We compare marine space use between breeding and non-breeding birds, and how marine home range locations and overlap vary with respect to nesting location and breeding status. We collected very high frequency (VHF) radio-telemetry data in southern British Columbia from Clayoquot Sound (190 birds; 2000–2002) and Desolation Sound (206 birds; 1998–2001). The sites differ strongly in their oceanic exposure and surrounding terrestrial features. Kernel utilization distribution-based estimates showed that breeders and non-breeders had similar overall distributions, but breeders were more spatially aggregated. Pooled home …
Diagnosis Of Hypothermia In Seabirds From Coastal California, Nancy L. Anderson
Diagnosis Of Hypothermia In Seabirds From Coastal California, Nancy L. Anderson
Marine Ornithology
This study established cloacal temperature (TCl) cut-off values to diagnose hypothermia in near shore seabirds rescued along the coast of California. All birds died when TCl was < 38.2 °C. When Aechmophorus grebes were excluded, 100% died when TCl was < 38.4 °C. Mortality increased 2–3× when TCl was lower than receiver operating curve-determined criteria for diagnosing hypothermia based on attitude: < 38.8 °C for mixed species, < 39.1 °C for Common Murres Uria aalge, and < 38.2 °C for Aechmophorus grebes. Reductions in TCl as small as 1.0 °C had significant physiologic effects.
Longevity Records For The Brown Booby Sula Leucogaster And Flesh-Footed Shearwater Ardenna Carneipes, Vincent H.S. Yap, Lillian G. Stewart, Silke Stuckenbrock, Andrew L. Fidler, Jennifer L. Lavers
Longevity Records For The Brown Booby Sula Leucogaster And Flesh-Footed Shearwater Ardenna Carneipes, Vincent H.S. Yap, Lillian G. Stewart, Silke Stuckenbrock, Andrew L. Fidler, Jennifer L. Lavers
Marine Ornithology
Longevity records for seabirds are vital to understanding population demography but are often limited due to the relatively short duration of many monitoring programs. Here, we present new longevity records for two seabird species: 32.2 years (Queensland, Australia) for the Brown Booby Sula leucogaster and 33.9 years (New Zealand) for the Flesh-footed Shearwater Ardenna carneipes, alongside existing longevity data. While these new records represent the oldest known birds to date, we suggest that they reflect typical adult lifespans of these species, i.e., 25–30 years, and reinforce the need for ongoing monitoring efforts.
Population Decline And Breeding Distribution Changes Of Magnificent Frigatebirds Fregata Magnificens In Baja California Sur, Gerardo Marrón, Adriana Hernández-Alvarez, Roberto Carmona, Sergio Águila
Population Decline And Breeding Distribution Changes Of Magnificent Frigatebirds Fregata Magnificens In Baja California Sur, Gerardo Marrón, Adriana Hernández-Alvarez, Roberto Carmona, Sergio Águila
Marine Ornithology
The Magnificent Frigatebird Fregata magnificens (MaFr) is a tropical seabird species that is widely distributed along the mid-latitude coasts of the Americas. Historically, its most important breeding location has been Estero Las Tijeras in the Magdalena Lagoon complex (MLC), Baja California Sur, Mexico. Our recent data indicate a severe (~96%) population decline at this location. In 2002–2003, 33535 MaFr were counted in all of the MLC, and historical data (1985–1986) support the maintenance of consistently high numbers of MaFr in this region over time. Yet, MaFr abundance dropped severely—to ~1 200 individuals—in 2015. This low abundance persisted into 2017, when …
Camera Trapping Reveals Cooperative Breeding In The Red-Footed Booby Sula Sula, Matthieu Le Corre, Morgane Manoury, Sabine Orlowski, Florent Bignon, Gabrielle Dicque
Camera Trapping Reveals Cooperative Breeding In The Red-Footed Booby Sula Sula, Matthieu Le Corre, Morgane Manoury, Sabine Orlowski, Florent Bignon, Gabrielle Dicque
Marine Ornithology
Cooperative breeding occurs in only 9% of bird species and is particularly rare among seabirds. We provide evidence that cooperative breeding occurs in a tropical seabird, the Red-footed Booby. Through camera monitoring of active nests, we found one nest in which a chick was raised by a trio of birds: its two parents and an immature bird. The immature bird fed the chick, guarded it, and preened it. The parents did not behave aggressively towards the immature bird when it approached the chick, suggesting that this trio was stable and composed of birds that knew each other. The growth of …
Status Of Craveri’S Murrelet Synthliboramphus Craveri In The Midriff Islands, Gulf Of California, Mexico, Francisco Jaime Martínez Reyes, Lauren A. Dolinski, Lorayne R. Meltzer, Paulina De L. Camarena Gomez, Noah L. Oas
Status Of Craveri’S Murrelet Synthliboramphus Craveri In The Midriff Islands, Gulf Of California, Mexico, Francisco Jaime Martínez Reyes, Lauren A. Dolinski, Lorayne R. Meltzer, Paulina De L. Camarena Gomez, Noah L. Oas
Marine Ornithology
The Craveri's Murrelet Synthliboramphus craveri is an endangered seabird (family Alcidae) endemic to northwestern Mexico, where it breeds on rocky islands throughout the Gulf of California (GOC). Nesting records are scarce for most of these islands, and much of the available information relies on historical data collected more than 50 years ago. Beginning in 2009 through to 2023, we performed intermittent nest searches on five islands in the Midriff Islands of the GOC. Starting in 2018 on Alcatraz Island and starting in 2022 on San Pedro Mártir Island, we monitored nests to determine average clutch size and hatching success. We …
Decrypting The Breeding Biology Of The Elusive And Declining Tahiti Petrel Pseudobulweria Rostrata, Angelique Pagenaud, Karen Bourgeois, Léna Payandi, Wilfried Weiss, Éric Vidal, Andreas Ravache
Decrypting The Breeding Biology Of The Elusive And Declining Tahiti Petrel Pseudobulweria Rostrata, Angelique Pagenaud, Karen Bourgeois, Léna Payandi, Wilfried Weiss, Éric Vidal, Andreas Ravache
Marine Ornithology
Among procellariids, the Tahiti Petrel Pseudobulweria rostrata is one of the most endangered and least known species. Its global populations are declining, yet demographic and ecological studies remain scarce. Understanding the breeding cycle and behavior of Tahiti Petrel adults and chicks is essential to develop effective protection measures. To address this knowledge gap, Tahiti Petrel colonies of various sizes were studied at three sites in New Caledonia, with extensive sampling at two main sites and limited sampling at a third. A total of 157 burrows were monitored for up to two years using endoscopic cameras and camera traps. This allowed …
Ecological Correlates Of Reproduction Of A Bet-Hedging Seabird, The Kittlitz’S Murrelet Brachyramphus Brevirostris, Michelle L. Kissling, Paul M. Lukacs, Grey W. Pendleton, Jonathan J. Felis, Scott M. Gende, Stephen B. Lewis
Ecological Correlates Of Reproduction Of A Bet-Hedging Seabird, The Kittlitz’S Murrelet Brachyramphus Brevirostris, Michelle L. Kissling, Paul M. Lukacs, Grey W. Pendleton, Jonathan J. Felis, Scott M. Gende, Stephen B. Lewis
Marine Ornithology
For longer-lived species, individuals hedge their bets by skipping breeding when conditions are poor to preserve the opportunity for future breeding attempts. Thus, understanding the ecological drivers behind the ‘choice’ to reproduce or not is a key step in identifying and diagnosing causes of population change. We investigated both marine and terrestrial factors that might influence whether Kittlitz’s Murrelets Brachyramphus brevirostris—a long-lived seabird of conservation concern that is often associated with glacially-influenced habitats—choose to breed in a given year. We used a suite of proxies to explain variation in reproductive metrics of radio-tagged Kittlitz’s Murrelets, exploring three hypotheses related to …
"You Need To Make The Decision You Can Live With": An Observational Study Of Anti-Abortion Centers In Tampa Bay, Anna Broich
"You Need To Make The Decision You Can Live With": An Observational Study Of Anti-Abortion Centers In Tampa Bay, Anna Broich
USF Tampa Graduate Theses and Dissertations
Anti-Abortion Centers (AACs) pose a grave threat to the reproductive health outcomes of Americans. Disguising themselves as licensed health clinics, AACs target vulnerable communities to prevent or delay abortion care through the spread of medical misinformation, contributing to abortion stigmatization. Situated in a state with a near-total abortion ban, this secret-shopper study aimed to understand the ways in which AACs in Tampa, Florida communicate anti-abortion rhetoric to pregnant people seeking abortions. Under the guise of people who suspect they are pregnant searching for abortion care, the main researcher and her assistants conducted the first phase of the study through 25 …
Recovery Of A Fly, A Louse, And Mites From A Rotting Ovenbird (Seiurus Aurocapilla) Carcass, Lawrence Hribar
Recovery Of A Fly, A Louse, And Mites From A Rotting Ovenbird (Seiurus Aurocapilla) Carcass, Lawrence Hribar
Florida Field Naturalist
No abstract provided.
Race To The Bottom: Is Seabed Mining Worth The Cost?, Linda Nhon
Race To The Bottom: Is Seabed Mining Worth The Cost?, Linda Nhon
GNSI Publications
There is a recent resurgence in seabed mining, particularly in the potential excavation of polymetallic nodules (PMN) for cobalt, nickel, and copper in response to the tight competition for critical minerals between the United States and China. From the 1970s to the 1980s, increased government funding in the seabed mining industry sparked a surge of academic research and international collaboration in deep-ocean exploration. Although not the sole driver of this ballooning interest, Project Azorian—the CIA’s audacious mission aboard the Glomar Explorer to recover the sunken Soviet nuclear submarine K-129—was undeniably catalytic in generating enthusiasm. Purportedly constructed by the aviation mogul …
Arthropods Collected From Common Yellowthroats (Geothlypis Trichas) On Vaca Key, Florida, Lawrence J. Hribar
Arthropods Collected From Common Yellowthroats (Geothlypis Trichas) On Vaca Key, Florida, Lawrence J. Hribar
Florida Field Naturalist
No abstract provided.
Contribution To The Knowledge Of Cave-Dwelling Fauna From The Prokletije Mountains, Joanna Kocot-Zalewska, Iwona Słowińska, Paweł Domagała, Jakub Bienias, Dominik Szymański, Dawid Szymański, Hubert Szymański, Paweł Sienkiewicz, Andrzej Józef Woźnica
Contribution To The Knowledge Of Cave-Dwelling Fauna From The Prokletije Mountains, Joanna Kocot-Zalewska, Iwona Słowińska, Paweł Domagała, Jakub Bienias, Dominik Szymański, Dawid Szymański, Hubert Szymański, Paweł Sienkiewicz, Andrzej Józef Woźnica
International Journal of Speleology
The article presents the results of the study on invertebrate fauna inhabiting caves in the Prokletije Mountains. This mountain range is located on the border of Montenegro, Albania, and Kosovo. During the expeditions to Albania in 2021 and to Montenegro in 2022–2023, 17 caves and one bauxite mine were visited altogether. All the studied caves are located very high, above 1,700 m a.s.l., where the temperature inside is low, and several are filled with ice or snow. During the Albanian expedition 102 arthropods have been collected altogether. Among these were 19 beetles (Coleoptera), 44 flies (Diptera), three crickets (Orthoptera), five …
Cyanobacteria And Algae From Chýnov And Koněprusy Caves (Czech Republic), Michaela Wipplingerová, Jan Pokorný, Jan Kaštovský
Cyanobacteria And Algae From Chýnov And Koněprusy Caves (Czech Republic), Michaela Wipplingerová, Jan Pokorný, Jan Kaštovský
International Journal of Speleology
Algae and cyanobacteria have been studied in two so far phycologically unexplored show caves (Chýnov and Koněprusy) in the Czech Republic. Taxa were identified morphologically using cultivation and subsequent light microscopy, while problematic cyanobacterial species were verified by sequencing the genes for 16S rRNA and 16S–23S internal transcribed spacer. A total of 13 cyanobacterial taxa were found, two Bacillariophyceae, three Xanthophyceae, four Chlorophyceae, six Trebouxiophyceae, 11 Streptophyta, and three Euglenida; many of these species were found for the first time in the caves. The darker parts of the caves were dominated by cyanobacteria, and green algae were found predominantly right …
Predicting Freshwater Spring Distribution Using Maxent Modeling: A Case Study In Groundwater Management Area 9 (Gma-9), Texas, Zayed Mallick
Predicting Freshwater Spring Distribution Using Maxent Modeling: A Case Study In Groundwater Management Area 9 (Gma-9), Texas, Zayed Mallick
USF Tampa Graduate Theses and Dissertations
Freshwater springs are one of the most vital groundwater sources and they have been a reliable water source for mining, irrigation, drinking, and farming, particularly in hot and arid regions like Groundwater Management Area-9 (GMA-9), Texas. However, excessive groundwater extraction, climate change, and environmental degradation have created tremendous stress on the sustainability of freshwater springs and as a result, they might not be able to meet the future water demand. This study uses the Maximum Entropy (MaxEnt) model to predict the distribution of springs in GMA-9 and to identify the key topographic and climatic factors influencing their occurrence. This study …