Results 51 to 60 of about 30,776 (205)

Co‐acquisition of mineral‐bound iron and phosphorus by natural Trichodesmium colonies

Limnology and Oceanography, Volume 68, Issue 5, Page 1064-1077, May 2023., 2023
Abstract Low iron (Fe) and phosphorus (P) ocean regions are often home to the globally important N2‐fixing cyanobacterium Trichodesmium spp., which are physiologically adapted to Fe/P co‐limitation. Given Trichodesmium's eminent ability to capture particles and the common associations between Fe and P in sediments and aerosols, we hypothesized that ...
Yeala Shaked, Dirk de Beer, Siyuan Wang, Futing Zhang, Anna‐Neva Visser, Meri Eichner, Subhajit Basu   +6 more
wiley   +1 more source

Genetic population dynamics of the critically endangered scalloped hammerhead shark (Sphyrna lewini) in the Eastern Tropical Pacific

Ecology and Evolution, Volume 12, Issue 12, December 2022., 2022
The scalloped hammerhead shark is a Critically Endangered (IUCN Red List), circumglobally distributed species in warm temperate and tropical seas. This species exhibits both periods of restricted movements as well a strong migratory propensity and is known to form iconic, large seasonal aggregations at offshore oceanic islands.
Sydney P. Harned, Andrea M. Bernard, Pelayo Salinas‐de‐León, Marissa R. Mehlrose, Jenifer Suarez, Yolani Robles, Sandra Bessudo, Felipe Ladino, Andrés López Garo, Ilena Zanella, Kevin A. Feldheim, Mahmood S. Shivji   +11 more
wiley   +1 more source

Rare coral and reef fish species status, possible extinctions, and associated environmental perceptions in Mauritius

Conservation Science and Practice, Volume 3, Issue 11, November 2021., 2021
Abstract Mauritius is reported to have the highest marine species endemism in the Western Indian Ocean faunal Province but the status of these species has not been evaluated. To address this knowledge gap, 119 reef sites were sampled to evaluate populations of 16 species of rare and endemic reef fish and corals using scuba‐based surveys conducted by ...
Tim McClanahan, Vikash Munbodhe, Josheena Naggea, Nyawira Muthiga, Ranjeet Bhagooli   +4 more
wiley   +1 more source

Using very‐high‐resolution satellite imagery and deep learning to detect and count African elephants in heterogeneous landscapes

Remote Sensing in Ecology and Conservation, Volume 7, Issue 3, Page 369-381, September 2021., 2021
In this study, we apply a Convolution Neural Network (CNN) model to automatically detect and count African elephants in a woodland savanna ecosystem in South Africa. We use WorldView‐3 and 4 satellite data – the highest resolution satellite imagery commercially available.
Isla Duporge, Olga Isupova, Steven Reece, David W. Macdonald, Tiejun Wang, Nathalie Pettorelli, Graeme Buchanan   +6 more
wiley   +1 more source

Diccionario histórico-toponímico de la Isla del Coco, Costa Rica

Revista de Biología Tropical, 2012
Se recolectaron de distintas fuentes documentales los nombres de setenta y seis topónimos correspondientes a los principales accidentes topográficos del Parque Nacional Isla del Coco, Costa Rica. Estos se pueden agrupar en cuatro grupos principales, como
Ronald Eduardo Díaz Bolaños, Eric J. Alfaro, Alexia Ugalde Quesada   +2 more
doaj   +1 more source

Earth's Magnetic Field Strength and the Cretaceous Normal Superchron: New Data From Costa Rica

Geochemistry, Geophysics, Geosystems, Volume 22, Issue 4, April 2021., 2021
Abstract Constraining the long‐term variability and average of the Earth's magnetic field strength is fundamental to understanding the characteristics and behavior of the geomagnetic field. Questions remain about the strength of the average field, and the relationship between strength and reversal frequency, due to the dispersion of data from key time ...
A. Di Chiara, L. Tauxe, H. Staudigel, F. Florindo, M. Protti, Y. Yu, J.‐A. Wartho, P. van den Bogaard, K. Hoernle   +8 more
wiley   +1 more source

Environmental heterogeneity dynamics drive plant diversity on oceanic islands

Journal of Biogeography, Volume 47, Issue 10, Page 2248-2260, October 2020., 2020
Abstract Aim The General Dynamic Model (GDM) links island biogeographical processes to island geological history. A key premise of the GDM implies that environmental factors shaping the ecology and evolution of biota on oceanic islands follow a hump‐shaped trend over the island's life span and drive dynamics in carrying capacity, species diversity and ...
Martha Paola Barajas‐Barbosa, Patrick Weigelt, Michael Krabbe Borregaard, Gunnar Keppel, Holger Kreft   +4 more
wiley   +1 more source

Asociación de tiburones con el Monte Submarino Las Gemelas y primera evidencia de conectividad con la Isla del Coco, Pacífico de Costa Rica

, 2020
Introducción: Los montes submarinos y las islas oceánicas son conocidos como “puntos calientes” de biodiversidad pelágica, los cuales son utilizados por especies altamente migratorias como corredores biológicos naturales. En el Pacífico Tropical Oriental
Elpis J. Chávez, R. Arauz, Alex Hearn, Elena Nalesso, T. Steiner   +4 more
semanticscholar   +1 more source

The sea anemone Exaiptasia diaphana (Actiniaria: Aiptasiidae) associated to rhodoliths at Isla del Coco National Park, Costa Rica

, 2020
Introduction: The sea anemones diversity is still poorly studied in Isla del Coco National Park, Costa Rica. Objective: To report for the first time the presence of the sea anemone Exaiptasia diaphana.
F. Acuña, J. Cortés, A. Garese, R. González-Muñoz   +3 more
semanticscholar   +1 more source

Aracnofauna (Arachnida) de la Isla del Coco, Costa Rica, con la descripción de tres nuevas especies

, 2020
Arachnofauna (Arachnida) of Isla del Coco, Costa Rica, with description of three new species. Introduction: The arachnids of Isla del Coco represent 50 species, located in six orders and 26 families.
Carlos Víquez
semanticscholar   +1 more source