Results 71 to 80 of about 106,242 (267)

Oceanic Methane Biogeochemistry [PDF]

open access: yesChemical Reviews, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
openaire   +4 more sources

Linking to images and AI‐based identification tools—The only way for Flora projects to survive

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Floras are comprehensive and authoritative catalogues of plants growing in an area of interest. They help people find and name plants, which is achieved by a combination of images, drawings, and text, rarely also maps. Like other catalogues (lexica, dictionaries, telephone books), Floras will not survive unless they move online and become portable ...
Susanne S. Renner
wiley   +1 more source

Contaminants of emerging concern in agricultural soils: Current understanding, overlooked issues, and future priorities

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Contaminants of emerging concern (CECs) in agriculture represent a growing global challenge for food safety and public health. In this review, we synthesized evidence on how substances such as pharmaceuticals, microplastics, and per‐ and polyfluoroalkyl substances (PFAS) enter soils, accumulate in crops, and affect ecological and human health. We found
Laura J. Carter   +8 more
wiley   +1 more source

Quantifying seasonal to multi-decadal signals in coastal water quality using high- and low-frequency time series data

open access: yesCambridge Prisms: Coastal Futures
To inform water quality monitoring techniques and modeling at coastal research sites, this study investigated seasonality and trends in coastal lagoons on the eastern shore of Virginia, USA.
Emma I. Brahmey   +2 more
doaj   +1 more source

Continental scale variability in ecosystem processes: Models, data, and the role of disturbance [PDF]

open access: yes, 1997
Management of ecosystems at large regional or continental scales and determination of the vulnerability of ecosystems to large-scale changes in climate or atmospheric chemistry require understanding how ecosystem processes are governed at large spatial ...
Braswell, Rob, Schimel, David S
core   +1 more source

Integrating functional diversity, food web processes, and biogeochemical carbon fluxes into a conceptual approach for modeling the upper ocean in a high-CO2 world [PDF]

open access: yes, 2005
Marine food webs influence climate by channeling carbon below the permanent pycnocline, where it can be sequestered. Because most of the organic matter exported from the euphotic zone is remineralized within the "upper ocean" (i.e., the water column ...
Legendre, Louis, Rivkin, Richard B.
core   +1 more source

The performance of growing degree day models to predict spring phenology of herbaceous species depends on the species' temporal niche

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The concept of growing degree days (GDDs) is commonly used to predict phenological events in plants, assuming that plants develop proportionally to the accumulated temperature. Two species‐specific parameters, TBase and t0 (minimum temperature above which and start date
Robert Rauschkolb   +10 more
wiley   +1 more source

The Impact of Parametric Uncertainties on Biogeochemistry in the E3SM Land Model

open access: yesJournal of Advances in Modeling Earth Systems, 2018
We conduct a global sensitivity analysis (GSA) of the Energy Exascale Earth System Model (E3SM), land model (ELM) to calculate the sensitivity of five key carbon cycle outputs to 68 model parameters.
Daniel Ricciuto   +2 more
doaj   +1 more source

Interspecific and Intrashell Stable Isotope Variation Among the Red Sea Giant Clams

open access: yesGeochemistry, Geophysics, Geosystems, 2020
The Gulf of Aqaba is home to three giant clam species with differing ecological niches and levels of photosymbiotic activity. Giant clams grow a two‐layered shell where the outer layer is precipitated in close association with photosymbiont‐bearing ...
Daniel Killam   +3 more
doaj   +1 more source

Below the leaves: Integrating above‐ and below‐ground phenology for earth‐system predictability

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Almost every aspect of biological systems has phenology—a pattern in activity or function linked to annual cycles. Most terrestrial phenology research focusses on leaves, the onset of leaf out or senescence.
Kendalynn Morris, Richard Nair
wiley   +1 more source

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