Results 41 to 50 of about 6,042,123 (195)

Contrasting spatial variations between above and below-ground net primary productivity in global grasslands

open access: yesEcological Indicators
Grassland net primary productivity (NPP) plays a crucial role in global terrestrial carbon cycle and carbon balance. However, the spatial pattern and influencing factors of NPP and its components, especially the belowground net primary productivity (BNPP)
Ying Hu   +8 more
doaj   +1 more source

‘The most advanced outpost of cultivation’: palynological evidence for cereal agriculture and population resilience in a marginal upland environment

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Upland farming in Europe is frequently assumed to have been limited and precarious, despite relict spade‐dug ridges providing firm evidence of past crop growing. Direct evidence for crop types in post‑Medieval to Modern (~since 1500 CE) uplands is rare; yet, in Ireland, relict spade‐dug ridges that date to this period are commonly interpreted ...
Helen Essell, Gill Plunkett
wiley   +1 more source

Comparison of net primary productivity (NPP) computed by the CASA and BIOME-BGC models from 2001 to 2013.

open access: yes, 2018
Comparison of net primary productivity (NPP) computed by the CASA and BIOME-BGC models from 2001 to 2013.
Huali Song (4849885)   +4 more
core   +1 more source

Global urban expansion offsets climate-driven increases in terrestrial net primary productivity

open access: yesNature Communications, 2019
Robust estimates of either urban expansion worldwide or the effects of such phenomenon on terrestrial net primary productivity (NPP) are lacking. Here the authors used the new dataset of global land use to show that the global urban areas expanded ...
Xiaoping Liu   +15 more
doaj   +1 more source

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith   +4 more
wiley   +1 more source

THE INFLUENCE OF DEPTH TO PRIMARY PRODUCTIVITY IN BAMA BEACH, BALURAN NATIONAL PARK [PDF]

open access: yesRussian Journal of Agricultural and Socio-Economic Sciences
Bama Beach is one of the beaches used as a tourist destination in Baluran National Park. Coral reefs are coastal ecosystems that have high productivity. This research will study the difference primary productivity of coral reef ecosystems at depth 1 - 10
Widhi R.N., Paluphi R.W.
doaj  

A tipping point for tipping points

open access: yesOikos, EarlyView.
Tipping points (TPs) – often understood as abrupt changes to a system – have become a popular framework for ecology and environmental science across spatial and temporal scales. The underlying, quantitative foundation of TP theory is built on mathematical models from catastrophe and predator–prey theories.
David G. Jenkins   +1 more
wiley   +1 more source

Informing the potential of mature temperate forests as natural climate solutions: Changed fine root biomass and morphology under elevated CO2

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
The land carbon sink absorbs approximately 25% of anthropogenic CO2 emissions, with forests accounting for most. Managing forests as Natural Climate Solutions is therefore a societal imperative, requiring models of where and how long carbon resides within these ecosystems. We investigated the effects of elevated CO2 on fine roots, the primary source of
Grace Handy   +13 more
wiley   +1 more source

Modeling the effects of hydrology on gross primary productivity and net ecosystem productivity at Mer Bleue bog [PDF]

open access: yes, 2011
: The ecosys model was applied to investigate the effects of water table and subsurface hydrology changes on carbon dioxide exchange at the ombrotrophic Mer Bleue peatland, Ontario, Canada.
LaFleur, P. M.   +3 more
core   +1 more source

Temporal and Spatial Dynamics and Driving Factors of Vegetation NPP in Western Sichuan from 2000 to 2015

open access: yesShuitu baochi yanjiu, 2019
This study is aimed to estimate the net primary productivity of vegetation in western Sichuan and analyze its spatial-temporal pattern and the relationship between net primary productivity (NPP) of vegetation and its driving factors, which provided a ...
CHEN Jie, XIAN Wei, CHEN Chunrong
doaj  

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