Article
Forestry
Kathryn L. Purcell, Eric L. McGregor
Summary: White-headed woodpeckers prefer and nest more successfully in higher elevation true fir forests. Congruence exists between habitat preferences and nest survival, particularly at the landscape scale, indicating adaptive selection. However, at the nest site scale, they may exhibit maladaptive habitat selection.
FOREST ECOLOGY AND MANAGEMENT
(2021)
Article
Biodiversity Conservation
Vincent Lamarre, Junior A. Tremblay
Summary: The study assessed the influence of habitat characteristics at different scales on the occupancy of American Three-toed Woodpecker in a heavily-managed boreal landscape of northeastern Canada, and inferred species occupancy at the regional scale. The occupancy of American Three-toed Woodpecker was lower in stands with large areas recently clear-cut, and higher in landscapes with large extents of old-growth forest dominated by black spruce. Areas with high probability of occupancy were scarce at the regional scale and mostly within protected areas, suggesting potential challenges for the long-term sustainability of the species and compromising the ecological role of old forest outside protected areas.
Article
Biodiversity Conservation
Rodrigo Barban Zucoloto, Gilberto Cafezeiro Bomfim, Flora Maria de Campos Fernandes, Alessandra Selbach Schnadelbach, Carlos Ignacio Pina, Luciano M. Verdade
Summary: The study estimated the effective population size of broad-snouted caiman populations in Brazil using a single-sample estimator, revealing significant genetic and genotypic differentiation among wild populations. The effective population size of captive colonies was slightly larger than that of wild populations, with only a few adults effectively contributing to genetic variation in most wild populations.
GLOBAL ECOLOGY AND CONSERVATION
(2021)
Article
Ornithology
Marie A. Gaylord, Adam Duarte, Brenda C. Mccomb, Jamie Ratliff
Summary: This study compares the detection probabilities of White-headed Woodpeckers between callback surveys and passive acoustic recording units (ARUs). The results show that ARUs have higher detection probabilities and can provide more accurate data for making forest management decisions.
JOURNAL OF FIELD ORNITHOLOGY
(2023)
Article
Biodiversity Conservation
Divya Vasudev, Varun R. Goswami, Madan K. Oli
Summary: The study proposes an approach to quantify connectivity by combining occupancy modeling with field data, allowing for a clear assessment of the impacts of the matrix on connectivity while considering imperfect detection of animal movement. The research demonstrates that distance to forests and ruggedness predominantly shape elephant connectivity patterns, highlighting the importance of understanding these factors for effective conservation efforts.
BIOLOGICAL CONSERVATION
(2021)
Article
Multidisciplinary Sciences
Sebastian C. A. Ferse, Margaux Y. Hein, Lena Roelfer
Summary: The survey of coral transplantation projects revealed that they are widespread in tropical regions, with fragments mainly sourced from opportunistic corals and aquaculture systems, and predominantly using fast-growing, branching coral species. While most projects conducted subsequent monitoring, the duration was inadequate to assess long-term success. Recommendations were made to strengthen sustainable funding, adequate site assessment, and long-term monitoring.
Article
Mathematics
Ryan Hynd
Summary: This paper investigates the dynamics of finite systems of point masses moving along the real line. Assuming pairwise particle interactions with perfectly inelastic collisions, the main result shows that the sticky particle property can be quantified if the interaction potential is semi-convex. Furthermore, this property is preserved as the number of particles tends to infinity. Using this, the paper demonstrates the existence of solutions and the satisfaction of an entropy inequality for the pressureless Euler equations under given initial conditions.
MATHEMATISCHE ZEITSCHRIFT
(2022)
Article
Biodiversity Conservation
Dikshya Devkota, Daniel C. Miller, Sonam W. Wang, Jeremy S. Brooks
Summary: Access to sufficient financial resources is crucial for effective biodiversity conservation. However, lack of funding has been a major obstacle in achieving conservation goals. This study addresses this issue by mapping conservation funding flows in Bhutan over the past four decades, revealing that most funding comes from bilateral and multilateral aid agencies, with domestic sources also contributing.
CONSERVATION SCIENCE AND PRACTICE
(2023)
Article
Biodiversity Conservation
Javan M. Bauder, Maximilian L. Allen, Thomas J. Benson, Craig A. Miller, Kirk W. Stodola
Summary: This study evaluated concordance in trends of species abundance using multiple sampling methods and state-space models to control observation error. The results suggest that consistent broad-scale trends in index data may be best used for evaluating relatively general trends, with more drastic changes warranting further in-depth studies.
BIODIVERSITY AND CONSERVATION
(2021)
Article
Fisheries
M-A Gose, E. Humble, A. Brownlow, B. Mikkelsen, C. Loftus, D. Wall, E. Rogan, M. ten Doeschate, N. Davison, R. Ogden
Summary: Understanding population genetic connectivity is crucial in managing highly mobile marine species, but obtaining genetic samples is challenging for species in inaccessible waters. This study uses samples from strandings and free-ranging individuals to assess genetic diversity and population structure of the Atlantic white-sided dolphin (AWSD). Results show a lack of population differentiation and species-wide genetic mixing in AWSD, highlighting the value of long-term stranding collections for cetacean research and conservation management.
ICES JOURNAL OF MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Yves Cherel, Karine Delord, Christophe Barbraud, Henri Weimerskirch
Summary: This study provides insights into the feeding ecology and prey species of the subantarctic white-headed petrel at the Kerguelen Islands. The analysis of stomach contents reveals that fish, especially mesopelagic fishes, are the main prey of the petrels, while cephalopods and crustaceans make up smaller proportions of their diet. The research also shows that these petrels primarily forage in subantarctic waters and migrate further south to feed their chicks. The absence of fishery-related items and plastic debris in the chicks' food samples indicates a lack of significant interactions with human activities, which is crucial for the conservation of the species.
Article
Multidisciplinary Sciences
Alireza Mohammadi, Kamran Almasieh, Ho Yi Wan, Danial Nayeri, Amir Alambeigi, Jason Ransom, Samuel A. Cushman
Summary: Local communities with knowledge about onagers experienced less crop damage from onager compared to those using traditional methods. Effective onager conservation will require protection of core areas and corridors, reduction of vehicle collisions, and conflict mediation between local communities and onagers.
SCIENTIFIC REPORTS
(2021)
Article
Biodiversity Conservation
Hua Xing Tang, Heng Lian Huang, Zen Xing Wang, Jian Bao Wu, Ai Long Wang, Deng Pan Nong, Paul A. Garber, Qi Hai Zhou, Cheng Ming Huang
Summary: This study presents the results of two population surveys conducted 10 years apart in the Chongzuo White-Headed Langur National Nature Reserve, China. The first survey recorded 818 individuals in 105 groups and 16 solitary adult males, while the second survey recorded 1,183 individuals in 128 groups and one solitary adult male. Government policies have reduced poaching as a threat, but forest loss and fragmentation caused by human activities could limit future population growth.
Article
Ornithology
Volodymyr M. Kucherenko
Summary: The first evidence of white-headed duck reproduction in Crimea is reported. Breeding in wetlands close to human settlement might be a response to human disturbances in more remote areas. The appearance of breeding birds in Crimea might be the result of changes in climate or reductions in other pressures such as hunting or fishing.
ORNITHOLOGY RESEARCH
(2023)
Article
Ecology
Jonathan K. Webb, Chris J. Jolly, Meagan Hinds, Craig Adams, Santiago Cuartas-Villa, Yingyod Lapwong, Mike Letnic
Summary: The unprecedented megafires in Australia from 2019 to 2020 had significant impacts on the population of broad-headed snakes, resulting in a substantial decline in population size. The study revealed that both human disturbance and wildfires had negative effects on the survival rates of adult snakes, with higher mortality rates observed in years with human disturbance and wildfires. These findings highlight the greater threat posed by snake removal and habitat disturbance compared to infrequent wildfires in terms of population viability.