Results 101 to 110 of about 2,172,240 (241)

An integrated model improves inferences about survival in the Mojave desert tortoise

Endangered Species Research
The Mojave desert tortoise Gopherus agassizii experienced population declines during recent decades, which have persisted despite its designation as a federally protected species.
SJ Hromada, B Folt, KT Shoemaker, M Standen, A Parsons, LJ Allison, J Dougherty, KK Drake, TC Esque, MA Walden, J Freilich, JE Lovich, AM McLuckie, CI Mitchell, MS Vamstad, AG Vandergast, EA Hunter, KE Nussear, BG Dickson   +18 more
doaj   +1 more source

Growth rates and age at adult size of loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea, estimated through capture-mark-recapture records

Scientia Marina, 2009
Growth rates of the juvenile phase of loggerhead turtles (Caretta caretta) were estimated for the first time in the Mediterranean Sea from capture-mark-recapture records. Thirty-eight turtles were released from Italian coasts and re-encountered after 1.0-
Paolo Casale, Antonios D. Mazaris, Daniela Freggi, Carola Vallini, Roberto Argano   +4 more
doaj   +1 more source

Capture-mark-resighting history of roseate terns ringed as fledglings

, 2018
Capture-mark-resighting history of individual roseate terns ringed as fledglings in the colonies Rockabill (R), Lady's Island Lake (L) and Coquet Island (C) from 1992 to 2016.
Tom Cadwallender (7058777), Paul Morrison (761685), Mark Bolton (132313), Norman Ratcliffe (171878), Daniel Piec (7058774), Adam Seward (7058765), Wesley Davies (7058780), Steve Newton (7058768), Richard Caldow (7058771)   +8 more
core   +1 more source

Population Dynamics of Northern Pearl Dace Margariscus nachtriebi in Anthropogenically Altered Headwater Streams of the Nebraska Sandhills Ecoregion

River Research and Applications, EarlyView.
ABSTRACT Empirical evidence of population demographic responses to environmental perturbations is a major knowledge gap for aquatic vertebrate populations. Extensive habitat alteration including channelization of headwater streams influences the habitat template on which small‐bodied fish are dependent to carry out distinct life stages and maintain or ...
Joseph Spooner, Jonathan Spurgeon
wiley   +1 more source

Spatial and temporal variation in population dynamics of Andean frogs: Effects of forest disturbance and evidence for declines

Global Ecology and Conservation, 2014
Biodiversity loss is a global phenomenon that can result in the collapse of food webs and critical ecosystem services. Amphibian population decline over the last century is a notable case of species loss because amphibians survived the last four major ...
Esther M. Cole, Martín R. Bustamante, Diego Almeida-Reinoso, W. Chris Funk   +3 more
doaj   +1 more source

Capture-recapture histories

, 2019
Matrix a capture-recapture data including 17 capture sessions (in column) and 3822 individuals (in line).
Cayuela, Hugo, Brandt, Hannelore, Hannelore Brandt (556878), Ozgul, Arpat, Benedikt R. Schmidt (193795), Schmidt, Benedikt R., Hugo Cayuela (3595871), Arpat Ozgul (707966), Sam Cruickshank (6491609), Cruickshank, Sam   +9 more
core   +1 more source

Using Deep Learning AI to Detect Riparian Vegetation Recovery Following a Major Flood in the Brisbane River

River Research and Applications, EarlyView.
ABSTRACT Post‐flood riparian vegetation recovery demands significant attention; however, the complexity of traditional remote sensing methods often hinders environmental managers from implementing rapid vegetation monitoring. This paper developed a model using a Deep Learning Model within ArcGIS to classify and detect recovery of vegetation with high ...
Sydney O'Hare, Jinghan Li, Yongping Wei
wiley   +1 more source

Estimating abundance of rare, small mammals: A case study of the Key Largo woodrat (Neotoma floridana smalli)

, 2011
Estimates of animal abundance or density are fundamental quantities in ecology and conservation, but for many species such as rare, small mammals, obtaining robust estimates is problematic.
Potts, Joanne M.
core  

Knee height is often right: evaluating device height effects on camera trapping rate

Remote Sensing in Ecology and Conservation, EarlyView.
Camera trap deployment height can introduce systematic biases in detection trapping rates across species of different body sizes. Combining 172 paired sampling points in five experiments across Europe, North America and Africa, our results show that low cameras significantly increase detections of small‐ and medium‐sized species, whereas high cameras ...
Jorge Sereno‐Cadierno, Tim R. Hofmeester, Marcus Becker, Alice Bernard, Lizette Moolman, Hervé Fritz, Pelayo Acevedo   +6 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