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primaryproductivity, etc ; carbon; carbon dioxide; environment; greenhouse gases; hydrochemistry; lentic systems; lotic systems; solar radiation; surface water; China; Show all 11 Subjects
Abstract:
... Inland waters have been increasingly viewed as hotspots for greenhouse gas (GHG) emissions owing to their strong capability to intercept and mineralize carbon from the terrestrial environment. Although small waterbodies in humid subtropical climates have the potential to emit considerable amounts of GHG, their emission patterns have remained understudied. This study involved intensive measurements ...
net primaryproductivity, etc ; Cenchrus ciliaris; Megathyrsus maximus; atmospheric precipitation; biomass; cultivars; forage; forage yield; indigenous species; pastures; temporal variation; water use efficiency; Argentina; Show all 13 Subjects
Abstract:
... Exotic pasture species are increasingly replacing native vegetation in subtropical areas because of their potential to increase forage yields. However, there is a scarce analysis of the relationship between forage yield and mean annual precipitation across regional gradients. We analyzed at a regional scale the temporal relationship between the aboveground net primary productivity (ANPP) and the p ...
net primaryproductivity, etc ; biomass; biosphere; carbon; carbon dioxide; carbon dioxide enrichment; deciduous forests; fine roots; image analysis; root growth; soil; statistical inference; uncertainty; Show all 13 Subjects
Abstract:
... Increasing CO₂ levels are a major global challenge, and the potential mitigation of anthropogenic CO₂ emissions by natural carbon sinks remains poorly understood. The uptake of elevated CO₂ (eCO₂) by the terrestrial biosphere, and subsequent sequestration as biomass in ecosystems, remain hard to quantify in natural ecosystems. Here, we combine field observations of fine root stocks and flows, deri ...
primaryproductivity, etc ; case studies; chlorophyll; climatology; coasts; color; dust; ecosystems; marine environment; phenology; phosphorus; phytoplankton; remote sensing; riparian areas; satellites; total nitrogen; North Sea; Show all 17 Subjects
Abstract:
... Primary production (PP) is highly sensitive to changes in the ecosystem and can be used as an early warning indicator for disturbance in the marine environment. Historic indicators of good environmental status of the north-east (NE) Atlantic and north-west (NW) European Seas suggested that daily PP should not exceed 2–3 g C m⁻² d⁻¹ during phytoplankton blooms and that annual rates should be <300 g ...
gross primaryproductivity, etc ; atmospheric precipitation; carbon; carbon dioxide; dry season; ecosystem respiration; ecosystems; eddy covariance; environment; evapotranspiration; net ecosystem production; paddies; photosynthesis; rice; solar radiation; summer; water conservation; water use efficiency; wet season; India; Show all 20 Subjects
Abstract:
... The lowland tropical triple-cropping rice system has unique characteristics that affect the hydrological, nutrient, and atmospheric environments. To better understand the ecosystem carbon and water dynamics of a triple-cropping rice paddy from the perspective of sustainability, ecosystem-level CO₂ flux and ecosystem water use efficiency (eWUE) were observed using eddy covariance over 2 years (2016 ...
... Adaptive responses of plants are important not only for local processes in populations and communities but also for global processes in the biosphere through the primary production of ecosystems. In recent years, the concept of environmental hormesis has been increasingly used to explain the adaptive responses of living organisms, including plants, to low doses of natural factors, both abiotic and ...
gross primaryproductivity; net primaryproductivity, etc ; ammonium; carbon; denitrification; forests; models; nitrates; nitrification; nitrogen; soil; New Hampshire; Show all 12 Subjects
Abstract:
... Models of terrestrial system dynamics often include nitrogen (N) cycles to better represent N limitations on terrestrial carbon (C) uptake, but simulating the fate of N in ecosystems has proven challenging. Here, key soil N fluxes and flux ratios from the Community Land Model version 5.0 (CLM5.0) are compared with an extensive set of observations from the Hubbard Brook Forest Long‐Term Ecological ...
gross primaryproductivity; net primaryproductivity, etc ; carbon; climate; ecosystems; environment; global carbon budget; model validation; models; remote sensing; Show all 10 Subjects
Abstract:
... Earth system models (ESMs) have been widely used to simulate global terrestrial carbon fluxes, including gross primary production (GPP) and net primary production (NPP). Assessment of such GPP and NPP products can be valuable for understanding the efficacy of certain ESMs in simulating the global carbon cycle and future climate impacts. In this work, we studied the model performance of 22 ESMs par ...
primaryproductivity, etc ; carbon; mortality; Arabian Sea; Show all 4 Subjects
Abstract:
... Viruses, the most abundant microorganisms in the ocean, play important roles in marine ecosystems, mainly by killing their hosts and contributing to nutrient recycling. However, in models simulating ecosystems in real marine environments, the virus-mediated mortality (VMM) rates of their hosts are implicitly represented by constant parameters, thus ignoring the dynamics caused by interactions betw ...
gross primaryproductivity; net primaryproductivity, etc ; carbon; climate change; fractional vegetation cover; leaf area index; remote sensing; Central Asia; Show all 8 Subjects
Abstract:
... As a major component of temperate steppes in the Eurasian continent, the Mongolian Plateau (MP) plays a pivotal role in the East Asian and global carbon cycles. This paper describes the use of five remote sensing indices derived from satellite data to characterize vegetation cover on MP, namely: gross primary production (GPP), net primary production (NPP), normalized difference vegetation index (N ...
gross primaryproductivity; net primaryproductivity, etc ; canopy; canopy height; carbon; climate; climate change; forests; lidar; models; shrublands; species diversity; uncertainty; Show all 13 Subjects
Abstract:
... Carbon use efficiency (CUE) represents how efficient a plant is at translating carbon gains through gross primary productivity (GPP) into net primary productivity (NPP) after respiratory costs (Rₐ). CUE varies across space with climate and species composition, but how CUE will respond to climate change is largely unknown due to uncertainty in Rₐ at novel high temperatures. We use a plant physiolog ...
primaryproductivity, etc ; Hydra; models; mortality; parasites; zooplankton; Show all 6 Subjects
Abstract:
... Parasites kill hosts but also can indirectly increase the abundance of their resources. Given this resource feedback, how much will parasites decrease host density? Can they increase host density? Seeking answers, we integrate trait measurements, a resource–host–parasite model and experimental epidemics with plankton. This combination reveals how parasites may decrease or increase host density. Th ...
primaryproductivity, etc ; coastal water; fish; groundwater; macroalgae; mariculture; Show all 6 Subjects
Abstract:
... Submarine groundwater discharge (SGD) acts as a conduit by which terrestrial materials enter coastal seas. In the present review, the impacts of SGD on marine aquaculture species are examined. SGD directly inputs to coastal water, modifying the hydrological conditions can enhance the growth rates of fish. More importantly, SGD-borne nutrient support primary productivity in various coastal ecosyste ...
gross primaryproductivity; net primaryproductivity, etc ; carbon; carbon sequestration; community structure; dry season; floodplains; hydrology; lakes; models; photosynthesis; phytoplankton; pollution; solar radiation; wet season; Show all 15 Subjects
Abstract:
... Phytoplankton contribute approximately 50% to the global photosynthetic carbon (C) fixation. However, our understanding of the corresponding C sequestration capacity and driving mechanisms associated with each individual phytoplankton taxonomic group is limited. Particularly in the hydrologically dynamic system with highly complex surface hydrological processes (floodplain lake systems). Through i ...
primaryproductivity, etc ; bibliometric analysis; bioeconomics; landscapes; social networks; stakeholders; Show all 6 Subjects
Abstract:
... With its cross-cutting nature, bioeconomy offers a unique opportunity to address complex and inter-connected challenges, while achieving economic goals. This fact has pushed many stakeholders to turn to bioeconomy as a path towards sustainable primary production and processing systems. An increasing number of studies on bioeconomy have reflected the multi-disciplinary nature and the constantly evo ...
Mark B. Edlund; Joy M. Ramstack Hobbs; Adam J. Heathcote; Daniel R. Engstrom; Jasmine E. Saros; Kristin E. Strock; William O. Hobbs; Norman A. Andresen; David D. VanderMeulen
primaryproductivity, etc ; Bacillariophyceae; algae; carbon; climate; lakes; silica; watersheds; Show all 8 Subjects
Abstract:
... Evidence suggests that boreal-lake ecosystems are changing rapidly, but with variable ecological responses, due to climate warming. Paleolimnological analysis of 27 undeveloped northern forested lakes showed significant and potentially climate-mediated shifts in diatom communities and increased carbon and biogenic silica burial. We hypothesize the sensitivity of northern forested lakes to climate ...
primaryproductivity, etc ; biogeochemical cycles; eutrophication; lakes; organic phosphorus; sediments; Show all 6 Subjects
Abstract:
... Lake eutrophication remains a serious environmental problem of global significance, and phosphorus (P) plays a key role in lake eutrophication. Internal P loading, as a result of P release from sediments, is gathering more and more recognition as an important source governing the P availability in these ecosystems. Anoxic condition can promote the release of P associated with Fe oxides, which has ...
gross primaryproductivity; net primaryproductivity, etc ; Earth system science; carbon; climatic factors; cold; ecosystem management; path analysis; temperate zones; temperature; vegetation; Central Africa; India; South America; Show all 14 Subjects
Abstract:
... Carbon use efficiency (CUE) refers to the allocation of photosynthesized products by plants and is commonly used to measure primary production in terrestrial ecosystems. Despite the fact that the effects of climate variation on vegetation CUE have been studied at various spatial scales, there is still a lack of consensus as to how vegetation CUE responds to climate factors. The objective of this s ...
primaryproductivity, etc ; data collection; microorganisms; photosynthesis; sediments; suspended sediment; turbidity; Show all 7 Subjects
Abstract:
... The characterization of suspended sediment dynamics in the coastal ocean provides key information for both scientific studies and operational challenges regarding, among others, turbidity, water transparency and the development of micro-organisms using photosynthesis, which is critical to primary production. Due to the complex interplay between natural and anthropogenic forcings, the understanding ...
primaryproductivity, etc ; autotrophs; chlorophyll; heterotrophs; latitude; trophic levels; Atlantic Ocean; Show all 7 Subjects
Abstract:
... In the marine realm, microorganisms are responsible for the bulk of primary production, thereby sustaining marine life across all trophic levels. Longhurst provinces have distinct microbial fingerprints; however, little is known about how microbial diversity and primary productivity change at finer spatial scales. Here, we sampled the Atlantic Ocean from south to north (~50°S–50°N), every ~0.5° la ...