Results 41 to 50 of about 152,248 (300)

Unveiling Protist Composition and Diversity Patterns With eDNA Metabarcoding: Comparing Short‐ and Long‐Read Approaches

Ecology and Evolution
Environmental DNA (eDNA) metabarcoding is a key tool in biodiversity monitoring due to its high‐throughput, non‐destructive nature. While short‐read (SR) sequencing platforms such as Illumina Miseq have been routinely used in environmental monitoring ...
Dimitra‐Ioli Skouroliakou, Deborah W. E. Dupont, Yelle Vandenboer, Sofie D'Hont, Koen Sabbe, Isa Schön   +5 more
doaj   +1 more source

Soft Robotic Snake with Tunable Undulatory Gait for Efficient Underwater Locomotion

Advanced Robotics Research, EarlyView.
This study designs an underwater soft snake robot using 3D‐printed soft actuators, controlled by specific signals to generate sinusoidal undulation. Results show a positive correlation between speed and swing amplitude, with optimal performance at 2/3π phase offset, PLA tail, 1.2 voltage growth rate, and 6s undulation period achieving a maximum speed ...
Huichen Ma, Junjie Zhou, Raye Yeow
wiley   +1 more source

High Grazing Pressure of Geese Threatens Conservation and Restoration of Reed Belts

Frontiers in Plant Science, 2018
Reed (Phragmites australis (Cav.) Trin. ex Steud.) beds are important habitat for marsh birds, but are declining throughout Europe. Increasing numbers of the native marsh bird, the Greylag goose (Anser anser L.), are hypothesized to cause reed bed ...
Elisabeth S. Bakker, Ciska G. F. Veen, Gerard J. N. Ter Heerdt, Naomi Huig, Judith M. Sarneel, Judith M. Sarneel, Judith M. Sarneel   +6 more
doaj   +1 more source

Home range, movement, and distribution patterns of the threatened dragonfly Sympetrum depressiusculum (Odonata: Libellulidae): a thousand times greater territory to protect? [PDF]

PLoS ONE, 2014
Dragonflies are good indicators of environmental health and biodiversity. Most studies addressing dragonfly ecology have focused on the importance of aquatic habitats, while the value of surrounding terrestrial habitats has often been overlooked. However,
Aleš Dolný, Filip Harabiš, Hana Mižičová   +2 more
doaj   +1 more source

PROTHONOTARY WARBLER NESTLING DIET AND GROWTH IN RESPONSE TO VARIATION IN AQUATIC AND TERRESTRIAL FOOD AVAILABILITY [PDF]

, 2015
Food supply has been suggested as the main determinant of reproductive success in birds. Riparian species can take advantage of seasonal pulses of both terrestrial and aquatic prey, though aquatic resources are often overlooked in studies of diet and ...
Dodson, Jenna C
core   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Diversity across organisational scale emerges through dispersal ability and speciation dynamics in tropical fish

BMC Biology, 2023
Background Biodiversity exists at different levels of organisation: e.g. genetic, individual, population, species, and community. These levels of organisation all exist within the same system, with diversity patterns emerging across organisational scales
Thomas Keggin, Conor Waldock, Alexander Skeels, Oskar Hagen, Camille Albouy, Stéphanie Manel, Loïc Pellissier   +6 more
doaj   +1 more source

Hatching asynchrony, survival, and the fitness of alternative adult morphs in \u3ci\u3eAmbystoma talpoideum\u3c/i\u3e [PDF]

, 2004
The mole salamander, Ambystoma talpoideum, exhibits both aquatic (gilled) and terrestrial (metamorphosed) adult morphologies. Previous studies have shown the existence of body-size advantages associated with the terrestrial morph in A.
Ryan, Travis J
core   +1 more source

Egg clutch dehydration induces early hatching in red-eyed treefrogs, Agalychnis callidryas [PDF]

, 2017
Terrestrial eggs have evolved repeatedly in tropical anurans exposing embryos to the new threat of dehydration. Red-eyed treefrogs, Agalychnis callidryas, lay eggs on plants over water.
Salica, María José, Vonesh, James R., Warkentin, Karen M.   +2 more
core   +3 more sources

The onset of grasses in the Amazon drainage basin, evidence from the fossil record [PDF]

, 2020
Poaceae (the grass family) originated in the Cretaceous, but first dominate the palynological records of the Amazon drainage basin (ADB) in the Neogene (23 to 2.5 million years ago (Ma)).
Hoorn, Carina, Kirschner, Judith A.
core   +3 more sources