Results 91 to 100 of about 44,818 (273)

Estimation of growth parameters for the exploited sea cucumber Holothuria arguinensis from South Portugal [PDF]

, 2018
Understanding how species grow is critical for choosing appropriate fisheries management strategies. Sea cucumbers shrink during periods of aestivation and have naturally flaccid bodies that make measuring growth difficult.
Erzini, Karim, Gonzalez-Wanguemert, Mercedes, Olaya-Restrepo, Julian   +2 more
core   +1 more source

Deep learning‐based super‐resolution reconstruction and improved YOLOv9 for efficient benthos detection: a case study at Lake Hamana, Japan

Remote Sensing in Ecology and Conservation, EarlyView.
This study presents a UAV‐based framework that integrates deep learning‐based super‐resolution reconstruction and an enhanced YOLO detector to improve centimetre‐scale benthic organism monitoring. Using hermit crabs in Lake Hamana, a coastal lagoon in Japan, as a case study, the method substantially enhanced small‐object detection performance ...
Fan Zhao, Bangzhang Ma, Dianhan Xi, Jiaqi Wang, Yijia Chen, Yongying Liu, Xinlei Shao, Mowen Zhang, Guocheng Zhang, Jundong Chen, Katsunori Mizuno   +10 more
wiley   +1 more source

Identity Play: Middle School Youths' Provisional Self‐Making in Horizon‐Expanding STEM Spaces

Science Education, EarlyView.
ABSTRACT This study introduces identity play as an analytic construct for science education to explore improvisational dimensions of middle school students' STEM identity development in multiple out‐of‐school learning experiences focused on environmental problem‐solving.
Heidi B. Carlone, Alison K. Mercier
wiley   +1 more source

A framework for the ethical use of animal‐borne devices in post‐release monitoring following rehabilitation

Wildlife Biology, EarlyView.
Rehabilitation and release contribute to conservation efforts for threatened species. Ensuring that these efforts are effective requires a good understanding of the factors which determine survival and integration of released animals into wild populations.
Jessica Harvey‐Carroll, Daire Carroll, Cara-Marie Trivella, Ellen Connelly   +3 more
wiley   +1 more source

Comparative evaluation of noninvasive DNA sampling and line transect surveys for spring density estimation of black grouse and capercaillie

Wildlife Biology, EarlyView.
Reliable abundance estimates provide essential information in ecology, conservation and management of many wild grouse populations. In this 3‐year study, we comparatively evaluate the suitability of traditional line transect distance sampling of flushed birds versus a spatial capture–recapture survey with noninvasive DNA samples for individual ...
Henrik Brøseth, Oddmund Kleven, Kjetil Bevanger   +2 more
wiley   +1 more source

Population structure of the broad-snouted caiman (Caiman latirostris) in natural and man-made water bodies associated with a silvicultural landscape [PDF]

, 2016
The broad-snouted caiman (Caiman latirostris) is a South American crocodilian with a wide geographical distribution. Water bodies originally occupied by the species have suffered extreme anthropogenic pressure; however, the broad-snouted caiman has a ...
Bassetti, Luís Antonio Bochetti, Lara, Neliton Ricardo Freitas, Marques, Thiago Simon, Millan, Cristian Honora, Piña, Carlos Ignacio, Verdade, Luciano Martins   +5 more
core  

Micro‐habitat selection by boreal woodland caribou improves access to food

Wildlife Biology, EarlyView.
Bio‐logging sensors attached to radiotelemetry receivers have great potential to transform our understanding of the ecological, physiological, and energetic constraints that shape patterns of wildlife movement under field conditions. We used video camera collars to assess microhabitat selectivity by woodland caribou Rangifer tarandus in boreal forests ...
Ian D. Thompson, Philip A. Wiebe, Arthur R. Rodgers, Douglas Reid, James A. Baker, Brent R. Patterson, Eric McNeill, Romain Dejeante, John M. Fryxell   +8 more
wiley   +1 more source

Quantifying the abundance and survival rates of island-associated spinner dolphins using a multi-state open robust design model

Scientific Reports
Spinner dolphins (Stenella longirostris subsp.) occupy the nearshore waters of several Hawaiian Islands. Due to their constrained behavioral pattern and genetic isolation, they are vulnerable to anthropogenic threats.
Liah McPherson, Janelle Badger, Kyleigh Fertitta, Madison Gordanier, Cameron Nemeth, Lars Bejder   +5 more
doaj   +1 more source

Beyond abundance: the impact of sampling design on effective population size estimates in capercaillie

Wildlife Biology, EarlyView.
Effective population size (Ne) is a useful parameter to evaluate the long‐term viability of populations. While obtaining enough field data from wild populations to estimate Ne directly is challenging, molecular techniques applied to non‐invasive samples provide an appealing alternative.
María‐José Bañuelos, Mario Quevedo
wiley   +1 more source

Accounting for unobserved population dynamics and aging error in close‐kin mark‐recapture assessments

Ecology and Evolution
Obtaining robust estimates of population abundance is a central challenge hindering the conservation and management of many threatened and exploited species.
John D. Swenson, Elizabeth N. Brooks, Dovi Kacev, Charlotte Boyd, Michael J. Kinney, Benjamin Marcy‐Quay, Anthony Sévêque, Kevin A. Feldheim, Lisa M. Komoroske   +8 more
doaj   +1 more source