Results 51 to 60 of about 57,482 (276)

Stratified sampling enhances the understanding of bat–fruit networks in the southern Atlantic Forest

Oikos, EarlyView.
Few studies have sought to understand the vertical patterns of bat–fruit systems, and therefore, it is not possible to evaluate whether interpretations based on data collected from a single stratum adequately represent the interaction patterns of this system. In this context, we evaluated the dissimilarity in the assemblage of frugivorous bats, plants,
Karolaine Porto Supi, Thais Bastos Zanata, Daniela Aparecida Savariz Bôlla, Fernando Carvalho   +3 more
wiley   +1 more source

Microhabitat selection by cave salamander (Eurycea lucifuga) as it relates to relative humidity and temperature [PDF]

, 2008
only availableDepending upon external conditions the twilight region of a cave can vary in temperature and humidity over time. Abundance of cave salamanders was observed to see if they selected for a more suitable microhabitat depending upon these ...
Oakley, Nick, Porneluzi, Paul, Shannon, Ben   +2 more
core  

Inequalities in intraspecific plant–lemur interactions drive seed dispersal patterns

Oikos, EarlyView.
Biotic interactions occur between individuals and accumulate to shape species‐level interaction structure across a community. Skewed interaction structures, where a few individuals are highly connected and most have few interactions, are increasingly identified at the individual‐level.
Jadelys Tonos, Hasinavalona Rakotoarisoa, Onja H. Razafindratsima   +2 more
wiley   +1 more source

Programmed unmanned aerial vehicles show great potential for monitoring marine megafauna in specific areas of interest

Remote Sensing in Ecology and Conservation, EarlyView.
Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann, Valdemar Palmqvist, Johanna Stedt   +2 more
wiley   +1 more source

Semi‐automated seal detection on the Western Antarctic Peninsula: an unsupervised machine learning approach for detecting ice seals in aerial survey data

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a semi‐automated, rule‐based image analysis pipeline to detect ice seals in aerial surveys of the Western Antarctic Peninsula during an unusually low sea ice year. By using simple hierarchical clustering instead of deep learning, the method substantially reduced human annotation effort while achieving 82% recall, identifying 758 ...
Claire McGinnity, Connor C.G. Bamford, Nathan Fenney, Andrew Fleming, Jaume Forcada, Michael S. Tift, Luis A. Hückstädt, Daniel P. Costa, Peter T. Fretwell   +8 more
wiley   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Mesopelagic fishes are important prey for a diversity of predators

Frontiers in Marine Science, 2023
Through daily vertical movements, mesopelagic fishes contribute to global carbon export and, when eaten, link primary consumers to higher trophic level predators.
Ilysa S. Iglesias, Ilysa S. Iglesias, Jarrod A. Santora, Jarrod A. Santora, Jerome Fiechter, John C. Field   +5 more
doaj   +1 more source

Electrification and Child Work: Direct and Spillover Effects in Ethiopia

Sustainable Development, EarlyView.
ABSTRACT While electrification is often promoted for improving adults' labor supply, its effect on child work remains underexplored. Using four waves of Ethiopian panel data, we examine how electrification affects children's work time. By differentiating between households with and without own electricity access within electrified communities, we ...
Theresa Pieper, Thanh‐Tung Nguyen
wiley   +1 more source

Cancer Chemopreventive and Anticancer Evaluation of Extracts and Fractions from Marine Macro- and Microorganisms Collected from Twilight Zone Waters around Guam

Natural Product Communications, 2009
The cancer chemopreventive and cytotoxic properties of 50 extracts derived from Twilight Zone (50–150 m) sponges, gorgonians and associated bacteria, together with 15 extracts from shallow water hard corals, as well as 16 fractions derived from the ...
Peter J. Schupp, Claudia Kohlert-Schupp, Susanna Whitefield, Anna Engemann, Sven Rohde, Thomas Hemscheidt, John M. Pezzuto, Tamara P. Kondratyuk, Eun-Jung Park, Laura Marler, Bahman Rostama, Anthony D. Wright   +11 more
doaj   +1 more source

Photoacclimation and induction of light-enhanced calcification in the mesophotic coral Euphyllia paradivisa [PDF]

Royal Society Open Science, 2019
Corals and their photosymbionts experience inherent changes in light along depth gradients, leading them to have evolved several well-investigated photoacclimation strategies.
Gal Eyal, Itay Cohen, Lee Eyal-Shaham, Or Ben-Zvi, Yaron Tikochinski, Yossi Loya   +5 more
doaj   +1 more source