Results 41 to 50 of about 3,079 (201)

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

Oikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade, Taryn Sepúlveda, Cristóbal Rivera, Cristian Aldea, Tomás I. Marina   +4 more
wiley   +1 more source

First comprehensive taxonomic account of Salmacis bicolor L. Agassiz in L. Agassiz & Desor, 1846 (Echinodermata: Echinoidea) from Manbar Island, Makran Coast, Pakistan

Journal of Fauna Biodiversity
The present study provides the first comprehensive morphological and taxonomic account of Salmacis bicolor L. Agassiz in L. Agassiz & Desor, 1846 from Pakistan, based on recently collected specimens from the intertidal rocky shore of Manbar Island along ...
Quratulan Ahmed, Qadeer Mohammad Ali, Ateeqa Baloch, Ivan Marin   +3 more
doaj   +1 more source

Population Density, Size Structure, and Reproductive Cycle of the Comestible Sea Urchin Sphaerechinus granularis (Echinodermata: Echinoidea) in the Pagasitikos Gulf (Aegean Sea)

Animals, 2020
Simple Summary Regular urchins are dominant grazers in the shallow sublittoral seabed. Several species are edible and commercially harvested, among which Sphaerechinus granularis is of increasing commercial importance due to the depletion of the common ...
D. Vafidis, C. Antoniadou, V. Ioannidi
semanticscholar   +1 more source

Evaluating and Advancing the Use of Shore‐Based Observers for Scientific Sampling and Catch Verification in High‐Volume Fisheries

Fisheries Management and Ecology, EarlyView.
ABSTRACT Shore‐based observers are increasingly being used in place of at‐sea observers to monitor and sample commercial fisheries catch. However, few evaluations assess whether these programs meet their stated goals or how to optimize them, and industry data are rarely tested for accuracy despite serving as the foundation for catch accounting. Using a
Christian Gredzens, Andy Kingham, Jason E. Jannot   +2 more
wiley   +1 more source

Magnetic resonance imaging (MRI) has failed to distinguish between smaller gut regions and larger haemal sinuses in sea urchins (Echinodermata: Echinoidea)

BMC Biology, 2009
A response to Ziegler A, Faber C, Mueller S, Bartolomaeus T: Systematic comparison and reconstruction of sea urchin (Echinoidea) internal anatomy: a novel approach using magnetic resonance imaging. BMC Biol 2008, 6: 33.
Ghiselin Michael T, Holland Nicholas D
doaj   +1 more source

Contribution to the knowledge of echinoid fauna from ‎Persian Gulf (Echinodermata: Echinoidea)‎ [PDF]

Iranian Journal of Animal Biosystematics, 2016
Species identification is always important. Records of sea urchins and sand dollars species ‎‎(Echinodermata, Echinoidea) is given from Iranian waters. Nine Species of Echinoderms were ‎identified through the study.
Seyed Afshin Nateghi Shahrokni, Seyed Mohammad Reza Fatemi, Seyed Mohammad Bagher Nabavi, Gholam Hossien Vosoughi   +3 more
doaj   +1 more source

Indigenous peoples and local community reports of climate change impacts on biodiversity

Conservation Biology, Volume 40, Issue 1, February 2026.
Abstract Climate change impacts on biodiversity have been primarily studied through ecological research methods, largely ignoring other knowledge systems. Indigenous and local knowledge systems include rich observations of changes in biodiversity that can inform climate change adaptation planning and environmental stewardship.
Albert Cruz‐Gispert, David García‐del‐Amo, André B. Junqueira, Christoph Schunko, Santiago Álvarez‐Fernández, Victoria Reyes‐García   +5 more
wiley   +1 more source

Annotated checklist of Echinoderms from Maranhão and Piauí States, Northeastern Brazil [PDF]

Check List, 2013
The present study provides the first checklist of echinoderm species that occurs in the States of Maranhão and Piauí, in Northeastern Brazil. The present compilation was produced based on an extensive bibliographical revision and on echinoderms deposited
Anne Gondim, Thelma Dias, Martin Christoffersen   +2 more
doaj   +3 more sources

Effects of an experimental in situ seabed disturbance on deep‐sea benthic ecosystem function and macro‐infaunal community structure on the Chatham Rise, Southwest Pacific

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1496-1529, December 2025.
ABSTRACT Expansion of extractive industries to deep‐sea environments will lead to increased stresses on seafloor ecosystems. We examined changes in environmental parameters following direct and indirect experimental benthic disturbance using a modified plough on the Chatham Rise (∼450 m water depth), Aotearoa/New Zealand. Measurements included sediment
Rachel Hale, Daniel Leduc, Campbell Murray, Ashley A. Rowden, Scott D. Nodder, Chris Eager, Rob Stewart, Christopher W. Hickey, Conrad Pilditch, Malcolm R. Clark   +9 more
wiley   +1 more source

Echinoderm research perspectives: A Central American bibliometric review

Cuadernos de investigación UNED, 2021
Introduction: Central America, a narrow strip of land dividing the Atlantic and Pacific oceans, has a high diversity of marine and terrestrial species. Echinoderms are one of the most diverse marine groups with 420 reported species.
Juan José Alvarado, Sònia Fabregat Malé   +1 more
doaj   +1 more source