Results 111 to 120 of about 70,217 (318)
ABSTRACT Regulated rivers represent complex hydrological systems where groundwater–surface water interactions are governed by natural conditions and human interventions. This study investigates the spatiotemporal dynamics of groundwater–surface water exchanges in the Nechako River, British Columbia (Canada), using numerical simulations.
Milad Fakhari +4 more
wiley +1 more source
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
Potential Impacts of Low Flows on Fish Foodscapes and Production in a Braided River
ABSTRACT Changes in river discharge affect the physical composition and connectivity of habitats which, in turn, may shape the spatial distribution of fish food abundance, accessibility and quality—the ‘foodscape’—of river ecosystems. However, the influence of river flows on fish foodscapes has received very little attention from scientists. We studied
Rick J. Stoffels +11 more
wiley +1 more source
Pink snapper (Pagrus auratus) form spawning aggregations during the austral spring/summer in three adjacent, sheltered, coastal embayments in southwestern Australia (Cockburn Sound, Warnbro Sound and Owen Anchorage).
Beckley, L.E. +2 more
core
Rapid recycling of coral mass-spawning products in permeable reef sediments. [PDF]
During the annual synchronous release of gametes by corals, a large amount of energy-rich organic material is released to the reef environment. In November 2001, we studied a minor spawning event at Heron Island in the Great Barrier Reef (GBR), Australia.
Tollrian, Ralph +5 more
core
ABSTRACT Empirical evidence of population demographic responses to environmental perturbations is a major knowledge gap for aquatic vertebrate populations. Extensive habitat alteration including channelization of headwater streams influences the habitat template on which small‐bodied fish are dependent to carry out distinct life stages and maintain or ...
Joseph Spooner, Jonathan Spurgeon
wiley +1 more source
Natural spawning of four Epinephelus species in the laboratory
Natural spawnings of four Epinephelus species reared in the laboratory were observed from 1987 to 1992. These species are: E. summana, E. caeruleopunctatus, E. macrospilus and E. fuscoguttatus.
Luchavez, J. A. +2 more
core
Skipped spawning in the Patagonian stock of Argentine Hake (Merluccius hubbsi) [PDF]
We analyzed the macroscopic and histological maturity data of Argentine hake (Merluccius hubbsi) collected off Patagonia in the spawning area of the Patagonian stock of this species between 2005 and 2014 to determine the frequency of skipped spawning ...
Leonarduzzi, Ezequiel +4 more
core +1 more source
River‐Scale Evaluation of a Floating LED Light Array for Behavioral Guidance of American Eel
ABSTRACT Exploiting the sensory physiology of migratory fishes to guide them away from hazards like hydroelectric turbines is of interest to regulatory agencies and hydropower operators to achieve conservation and management goals. Here we describe a river‐scale experiment where out‐migrating adult American eel (Anguilla rostrata) were tracked ...
Chris K. Elvidge +13 more
wiley +1 more source
The contribution of spawning closures to sustainable management of North Sea flatfish fisheries is explored using a spatial and temporal explicit model of four target species (sole, plaice, turbot and brill) and two bycatch species (cod, rays).
Poos, J.J. +2 more
core

