Results 1 to 10 of about 2,135,400 (251)

Wintering population fluctuation of the Anatidae family in the Bakhtegan Basin Wetlands, Iran [PDF]

علوم محیطی, 2023
Introduction: Anatidae family is considered as a biological indicator of wetlands due to their migratory behavior, wide distribution and high population density.
Farhad Hosseini Tayefeh, Saber Ghasemi, Mona Izadian, Seyyed Ghasem Ghorbanzadeh   +3 more
doaj   +1 more source

Decline towards extinction of Mexico's vaquita porpoise (Phocoena sinus) [PDF]

Royal Society Open Science, 2019
The vaquita (Phocoena sinus) is a small porpoise endemic to Mexico. It is listed by IUCN as Critically Endangered because of unsustainable levels of bycatch in gillnets.
Armando M. Jaramillo-Legorreta, Gustavo Cardenas-Hinojosa, Edwyna Nieto-Garcia, Lorenzo Rojas-Bracho, Len Thomas, Jay M. Ver Hoef, Jeffrey Moore, Barbara Taylor, Jay Barlow, Nicholas Tregenza   +9 more
doaj   +1 more source

Use of an INLA Latent Gaussian Modeling Approach to Assess Bird Population Changes Due to the Development of Offshore Wind Farms

Frontiers in Marine Science, 2021
The utilization of marine renewable energies such as offshore wind farming leads to globally expanding human activities in marine habitats. While knowledge on the responses to offshore wind farms and associated shipping traffic is accumulating now at a ...
Raul Vilela, Claudia Burger, Ansgar Diederichs, Fabian E. Bachl, Fabian E. Bachl, Lesley Szostek, Anika Freund, Alexander Braasch, Jochen Bellebaum, Brian Beckers, Werner Piper, Georg Nehls   +11 more
doaj   +1 more source

Spatial Distribution, Temporal Changes, and Knowledge Gaps in Basking Shark (Cetorhinus maximus) Sightings in the California Current Ecosystem

Frontiers in Marine Science, 2022
Among the largest fish species, the basking shark (Cetorhinus maximus) is found circumglobally in temperate and tropical waters. Though historical documents have recorded their presence in the California Current Ecosystem (CCE), basking sharks are now ...
Alexandra G. McInturf, Alexandra G. McInturf, Alexandra G. McInturf, Barbara Muhling, Barbara Muhling, Joseph J. Bizzarro, Joseph J. Bizzarro, Nann A. Fangue, David A. Ebert, David A. Ebert, Damien Caillaud, Heidi Dewar   +11 more
doaj   +1 more source

Declive de la población reproductora de gaviota patiamarilla Larus michahellis en la costa vasca (Cantábrico oriental) durante el periodo 2000-2021 [PDF]

Munibe Ciencias Naturales, 2022
Censos recientes revelan un declive poblacional acusado de la gaviota patiamarilla Larus michahellis en buena parte de su área de distribución. Ya a mediados de la década de 2010 se registró en la costa vasca un declive cercano al 50% respecto al censo ...
Juan Arizaga, Aitor Galarza, Sergio Delgado, Nere Zorrozua, Asier Aldalur, Oscar Carazo, Jon Zubiaur   +6 more
doaj   +1 more source

Occupancy‐based monitoring of ungulate prey species in Thailand indicates population stability, but limited recovery

Ecosphere, 2020
Longitudinal studies of wildlife are urgently needed in South‐East Asia to understand population responses to the high poaching pressure that characterizes this region.
Worrapan Phumanee, Robert Steinmetz, Rungnapa Phoonjampa, Thawatchai Bejraburnin, Matthew Grainger, Tommaso Savini   +5 more
doaj   +1 more source

Modeling the decline of the Porcupine Caribou Herd, 1989-1998: the importance of survival vs. recruitment

Rangifer, 2003
The Porcupine caribou (Rangifer tarandus granti) herd increased from approximately 100 000 animals during the 1970s to 178 000 in 1989, then declined to 129 000 by 1998.
Stephen M. Arthur, Kenneth R. Whitten, Francis J. Mauer, Dorothy Cooley   +3 more
doaj   +1 more source

Marmots from space: assessing population size and habitat use of a burrowing mammal using publicly available satellite images

Remote Sensing in Ecology and Conservation, 2020
Social, burrowing mammals such as prairie dogs, ground squirrels or marmots are keystone species in grassland ecosystems. Grasslands have been converted into cropland or pastures globally, yet it remains virtually unknown how this has affected the ...
Alyona Koshkina, Irina Grigoryeva, Viktor Tokarsky, Ruslan Urazaliyev, Tobias Kuemmerle, Norbert Hölzel, Johannes Kamp   +6 more
doaj   +1 more source

Mortality reduction associated with HIV/AIDS care and antiretroviral treatment in rural Malawi: evidence from registers, coffin sales and funerals. [PDF]

, 2010
BACKGROUND: To report on the trend in all-cause mortality in a rural district of Malawi that has successfully scaled-up HIV/AIDS care including antiretroviral treatment (ART) to its population, through corroborative evidence from a) registered deaths at ...
Anthony D. Harries, Beatrice Mwagomba, Bester C. Mandere, Dalitso Misindi, Eric J. Schouten, Kelita Kamoto, Landon Myer, Marcel Manzi, Marielle Bemelmans, Mit Philips, Moses Massaquoi, Rony Zachariah   +11 more
core   +4 more sources

The status of rhinoceroses in South African National Parks

Koedoe: African Protected Area Conservation and Science, 2017
African rhinoceroses (rhinos) experienced a poaching onslaught since 2008 with the epicentre in South Africa where most of the world’s rhinos occur.
Sam M. Ferreira, Charlene Bissett, Carly R. Cowell, Angela Gaylard, Cathy Greaver, Jessica Hayes, Markus Hofmeyr, Lizette Moolman-van der Vyver, David Zimmermann   +8 more
doaj   +1 more source