Results 31 to 40 of about 2,395 (237)

Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America

American Journal of Botany, EarlyView.
Abstract Premise The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the well‐documented “fern spore spike.” However, fern macrofossil records across the K–Pg boundary are less understood.
Fern B. Holian, Emily B. Sessa, Richard S. Barclay, Regan E. Dunn, Jacquelyn L. Gill, Kirk R. Johnson, S. Augusta Maccracken, Ian M. Miller, Jarmila Pittermann, Ellen D. Currano   +9 more
wiley   +1 more source

Differences in environmental heterogeneity promote the nestedness of Chironomidae metacommunity in Neotropical floodplain lakes

Acta Limnologica Brasiliensia, 2017
Aim: Gradients of environmental heterogeneity perform a strong influence on the distribution of organisms and determine differences in composition, where more physically complex habitats harbor greater species richness than those simpler.
Gisele Daiane Pinha, Rafael Prandini Tramonte, Camila Gentilin Bilia, Alice Michiyo Takeda   +3 more
doaj   +1 more source

Continental scale metagenomics reveals Microcystis‐induced synchrony among aquatic taxa is exacerbated by trophic cascades

Ecography, EarlyView.
Harmful Microcystis proliferation severely threatens aquatic ecosystems globally, but its impacts on food‐web stability remain poorly understood. Here, we analyzed 1309 metagenomic samples from freshwater ecosystems across China to investigate how Microcystis abundance affects synchrony among taxa in multi‐trophic food webs (from bacteriophages to ...
Lemian Liu, Siqi Zhu, Xiaoqin Huang, Wenjia Hu, Lixiang Luo, Xiusong Pan, Jianfeng Chen   +6 more
wiley   +1 more source

Periphytic algal community in lentic environments of the Upper Paraná River floodplain: seasonal and spatial variation

Acta Limnologica Brasiliensia, 2018
Aim: This study aimed to evaluate the influence of seasonal variation in the hydrological regime and of limnological variables on species richness of periphytic algae in lakes of the Upper Paraná River floodplain.
Kisay Lorena Adame, Barbara Dunck, Liliana Rodrigues   +2 more
doaj   +1 more source

Evaluation of fisheries management strategies using a biotic integrity index in floodplain lakes in the lower Solimões River, Amazonas, Brazil

Acta Amazonica, 2022
Fisheries is an important activity in the Amazon basin and potentially has a high impact on ichthyofauna. With the aim of achieving sustainability in fisheries of target species, protected areas were established within a fisheries management framework ...
Bruna de Souza ANDRADE, Carlos Edwar de Carvalho FREITAS, Maria Letizia PETESSE, Flávia Kelly SIQUEIRA-SOUZA   +3 more
doaj   +1 more source

Tectono‐Sedimentary Evolution of the Neogene İnegöl Basin (NW Anatolia): Constraints on Transtensional Basin Development at the Junction of the Western Anatolian Extensional Province and the North Anatolian Fault Zone

Geological Journal, EarlyView.
The study outlines the tectono‐sedimentary evolution of the İnegöl Basin in north‐western Anatolia. Basin formation was controlled by interacting extensional and strike‐slip fault systems linked to uplift of the Uludağ Massif. Terrestrial sedimentation from the Miocene to Pleistocene is reconstructed using abundant fossil mammal assemblages that ...
M. Cihat Alçiçek, Volkan Karabacak, Serdar Mayda   +2 more
wiley   +1 more source

Carbon accumulation in Amazonian floodplain lakes: A significant component of Amazon budgets?

Limnology and Oceanography Letters, 2017
The Amazon floodplains cover approximately 10% of the Amazon Basin and are composed of predominantly anoxic sediments that may store large amounts of carbon. Our study combines 210Pb derived sedimentation rates from four recently analyzed sediment cores (
Luciana M. Sanders, Kathryn H. Taffs, Debra J. Stokes, Christian J. Sanders, Joseph M. Smoak, Alex Enrich‐Prast, Paul A. Macklin, Isaac R. Santos, Humberto Marotta   +8 more
doaj   +1 more source

Effect of local and regional factors on the structure of the fish communities associated with aquatic macrophyte stands in oxbow lakes on the Amazon floodplain [PDF]

Anais da Academia Brasileira de Ciências
The Amazon floodplain is home to an extremely high diversity of fish, with lakes playing an important role in the establishment of this biological richness.
RONALDO S. DA SILVA, JEAN CARLO G. ORTEGA, TIAGO RICARDO F. JACÓ, GUILHERME S. CABRAL, FABIANO CORRÊA, LUCENA R. VIRGILIO, LUCIANO F.A. MONTAG   +6 more
doaj   +1 more source

Linking distribution and return‐on‐investment models to optimize woody management for prairie grouse in Nebraska

The Journal of Wildlife Management, EarlyView.
We modeled prairie grouse abundance across Nebraska and projected future woody encroachment to estimate population losses. By combining predicted gains from woody treatments with avoided losses and treatment costs, we mapped return on investment to identify areas for woody treatments that maximize benefits to greater prairie‐chickens and sharp‐tailed ...
Kevin W. Barnes, Bryan J. O'Connor, Andrew A. Bishop, Roger C. Grosse, Gregory Brinkman, Clinton B. Leach, Neal D. Niemuth, Kevin L. Pope, Bradly S. Thornton, John Laux   +9 more
wiley   +1 more source

Length-weight relationships of ornamental fish from floodplain lakes in the Solimões River basin (Iranduba, Amazonas, Brazil)

Revista Colombiana de Ciencia Animal Recia, 2019
This research reports the LWR of ornamental fish from floodplain lakes of the Solimões River basin. The fish were caught in the Paciência island (a fluvial island) in two lakes Sacambú and Cacau using purse seine 7 m × 4 m and mesh size = 3 mm, once ...
André Sampaio, Jamerson Aguiar-Santos, Hélio Anjos, Carlos Freitas, Flávia Siqueira-Souza   +4 more
doaj   +1 more source