Results 101 to 110 of about 101,599 (204)

Valuing local water quality in Ontario using revealed preference data

open access: yesCanadian Journal of Agricultural Economics/Revue canadienne d'agroeconomie, EarlyView.
Abstract Improving water quality is an important goal for policymakers, yet understanding the economic benefits people receive from changes in water quality is challenging because many of the benefits are non‐market in nature. We use spatially explicit lake Secchi disk depth measures and information on over 320,000 property sales to provide the most ...
Tharaka A. Jayalath   +2 more
wiley   +1 more source

Mesoscale Oceanographic Processes Drive the Seasonal Abundance of the Seabob Shrimp Xiphopenaeus spp. on the Eastern Brazilian Shelf

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT The seabob shrimp (Xiphopenaeus spp.) is a primary fishery resource in Brazil, with considerable economic and social importance along the coast. While environmental drivers of its life cycle are well‐documented for southeastern and southern populations, the factors modulating populations in the Eastern Brazilian Shelf remain poorly understood,
Leandro Bonesi Rabelo   +2 more
wiley   +1 more source

Morphology captures function in phytoplankton : a large-scale analysis of phytoplankton communities in relation to their environment [PDF]

open access: yes, 2010
Predicting phytoplankton community dynamics in detail seems an overwhelming task as there are so many species, and a myriad of combinations of potential conditioning factors.
Kruk, C.
core  

Physical controls and mesoscale variability in the Labrador Sea spring phytoplankton bloom observed by Seaglider [PDF]

open access: yes, 2009
We investigated the 2005 spring phytoplankton bloom in the Labrador Sea using Seaglider, an autonomous underwater vehicle equipped with hydrographic, bio-optical and oxygen sensors.
Rhines, Peter B.   +2 more
core   +1 more source

Contrasting Food Web Dynamics Across Oceanographic Boundaries in Subarctic Pelagic Ecosystems

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT Understanding the structure of pelagic food webs across multiple trophic levels is critical for elucidating species interactions, energy flow, and anthropogenic impacts on production. This study presents a comprehensive analysis of the eastern North Pacific pelagic food webs, focusing on the Gulf of Alaska (GoA) during late winter of 2019.
Genyffer C. Troina   +3 more
wiley   +1 more source

Stable Isotope Analyses of Yellowfin and Blackfin Tuna Eye Lenses Reveal Life History Patterns

open access: yesFisheries Oceanography, EarlyView.
ABSTRACT Spatial geography, ontogenetic movement, and trophic patterns of mobile species are key elements of species life history, and knowledge of them is critical for effective marine resource management. For yellowfin tuna (Thunnus albacares; YFT) and blackfin tuna (Thunnus atlanticus; BLFT), residency durations and ontogenetic movements in the Gulf
Kylee M. Rullo   +3 more
wiley   +1 more source

Seasonal patterns and interannual variability of phytoplankton in Lake Stechlin [PDF]

open access: yes, 2004
The paper presents results of detailed phytoplankton investigations in Lake Stechlin between 1994 and 2003. The analysis includes the picoplankton fraction (dominated by Cyanobium sp.) that regularly appears as a deep-layer chlorophyll maximum (DCM ...
Koschel, Rainer   +3 more
core   +1 more source

Marine phytoplankton primary production and ecophysiology using chlorophyll-A fluorescence [PDF]

open access: yes, 2007
Marine phytoplankton ecophysiological state and primary production measurements have typically been controversial due to potential impacts of measurement techniques.
Cosgrove, Jeffrey John
core  

The effects of nutrient additions to phytoplankton size structures based on chlorophyll in the Equatorial Pacific Ocean

open access: yes, 2023
Phytoplankton, the primary producers of ocean, have produced over half of the oxygen in the atmosphere and use dissolved carbon dioxide to accumulate biomass which is critical to the biological pump.
Johnson, Connor
core  

Distributions of particulate Heme b in the Atlantic and Southern Oceans - implications for electron transport in phytoplankton [PDF]

open access: yes, 2013
Concentrations of heme b, the iron-containing component of b-type hemoproteins, ranged from  500). High chl a:heme b ratios resulted from relative decreases in heme b, suggesting proteins such as cytochrome b6f, the core complex of photosystem II, and ...
Nielsdottir, Maria C.   +14 more
core   +1 more source

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