Results 71 to 80 of about 43,330 (296)

Assessment of the impact of seasonal patterns climatic conditions on spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758) in astronomical and biological time

open access: yesActa Biologica Sibirica, 2018
This paper describes spawning events of the white bream Blicca bjoerkna (Linnaeus, 1758 )in astronomical and biological time depending on seasonal patterns of climatic conditions.
D. Bondarev, O. Kunakh, O. Zhukov
doaj   +1 more source

Electrified rhythms: How hydropower infrastructure transforms hydrosocial relations of riverine communities in the Lower Sogamoso River, Colombia

open access: yesPeople and Nature, EarlyView.
Abstract Hydropower dams regulate water flows for millions of downstream inhabitants worldwide, altering water availability. Under a changing climate, flow control is often framed technically and politically as being essential for reducing drought and flood risks. However, it can also disrupt ecological flows, impact livelihoods and erode environmental
Laura Betancur‐Alarcón   +4 more
wiley   +1 more source

A case study of temperature tendency mechanisms operating over northern Africa during and following midlatitude winter troughs

open access: yesQuarterly Journal of the Royal Meteorological Society, EarlyView.
An Iberia‐Central Mediterranean trough sequence (7–10 February 2018) delivers anomalous low‐level temperature tendencies attributable to dynamics across most of northern Africa, with warming over northeastern Africa, especially 10–12 February into the eastern Sahel. An ECMWF product attributes the tendencies (see Figure).
Neil Ward   +3 more
wiley   +1 more source

Making Waves: The Effects of Whitewater Parks on Fish Passage in Colorado

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Instream structures have fragmented riverine habitats throughout much of the world, including the Western USA. Whitewater parks (WWPs) are relatively new instream structures designed to create hydraulic waves for recreational boating and surfing by constricting flows into a steep chute or drop.
Eric E. Richer   +5 more
wiley   +1 more source

Reproductive biology of round sardinella (Sardinella aurita) in north-eastern Mediterranean

open access: yesScientia Marina, 2006
The reproductive biology of round sardinella, Sardinella aurita Valenciennes, 1847, was studied for the first time in the north-eastern Mediterranean Sea.
Athanassios C. Tsikliras   +1 more
doaj   +1 more source

Evaluating Movements of Co‐Occurring Silver and Bighead Carp in a Small Missouri River Tributary

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Silver Carp Hypophthalmichthys molitrix and Bighead Carp Hypophthalmichthys nobilis commonly inhabit small tributaries of mainstem rivers. However, dynamic environmental conditions within these systems may influence their movement patterns differently than in larger rivers, potentially leading to important implications regarding their range ...
Seth M. Renner, Michael J. Weber
wiley   +1 more source

Zebrafish Girella zebra (Richardson 1846): Biological Characteristics of an Unexploited Fish Population

open access: yesFishes
Kyphosids are prominent members of temperate and subtropical reef fish communities, though many species are not targeted due to their poor eating qualities. This study investigated the biology of the non-targeted zebrafish, Girella zebra, from waters off
Peter Graham Coulson
doaj   +1 more source

Kootenai River White Sturgeon Spawning Migration Behavior and a Predictive Model [PDF]

open access: bronze, 2001
Vaughn L. Paragamian, Gretchen Kruse
openalex   +1 more source

Environmental Conditions along Tuna Larval Dispersion: Insights on the Spawning Habitat and Impact on Their Development Stages [PDF]

open access: gold, 2022
Stefania Russo   +7 more
openalex   +1 more source

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