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Recent Shrub Proliferation in the Mackenzie Delta Uplands and Microclimatic Implications
Springer Science and Business Media LLC - Tập 16 - Trang 47-59 - 2012
Trevor C. Lantz, Philip Marsh, Steven V. Kokelj
Local observations, repeat photos, and broad-scale remote sensing suggest that tall shrubs are becoming an increasingly dominant component of Low Arctic ecosystems. This shift has the potential to alter the surface energy balance through changes to the surface albedo, snow accumulation and melt, and ground thermal regimes. However, to date there have been few quantitative estimates of the rate of ...... hiện toàn bộ
Effects of Nesting Cormorants (Phalacrocorax carbo) on Soil Chemistry, Microbial Communities and Soil Fauna
Springer Science and Business Media LLC - Tập 18 - Trang 643-657 - 2015
Gundula S. Kolb, Cecilia Palmborg, Astrid R. Taylor, Erland Bååth, Peter A. Hambäck
Seabirds act as vectors transporting marine nutrients to land by feeding on fish while nesting and roosting on islands. By depositing large amounts of nutrient-rich guano on their nesting islands they strongly affect island soils, vegetation and consumers. However, few studies have investigated how nesting seabirds affect soil communities. In this study, we investigated how cormorant nesting colo...... hiện toàn bộ
Patterns of Spring/Summer Open-Water Metabolism Across Boreal Lakes
Springer Science and Business Media LLC - - 2020
Matthew J. Bogard, Nicolas F. St-Gelais, Dominic Vachon, Paul A. del Giorgio
Northern regions host the greatest density of surface water globally, but knowledge of lake metabolism in this vast yet remote landscape is limited. Here, we used an oxygen stable isotope approach to quantify patterns and drivers of surface layer metabolism in lakes throughout an approximately 106 km2 tract of boreal Canada. Ecosystem gross primary production (GPP) and respiration rates (R) were m...... hiện toàn bộ
A Multiscale Framework for Deconstructing the Ecosystem Physical Template of High-Altitude Lakes
Springer Science and Business Media LLC - Tập 19 - Trang 1064-1079 - 2016
Dragos G. Zaharescu, Peter S. Hooda, Carmen I. Burghelea, Antonio Palanca-Soler
An ecosystem is generally sustained by a set of integrated physical elements forming a functional landscape unit—ecotope, which supplies nutrients, microclimate, and exchanges matter and energy with the wider environment. To better predict environmental change effects on ecosystems, particularly in critically sensitive regions such as high altitudes, it is imperative to recognise how their natural...... hiện toàn bộ
Response to “Lessons from the Sandbox: Is Unexplained Nitrogen Real?”
Springer Science and Business Media LLC - Tập 5 - Trang 0734-0735 - 2002
Dan Binkley
Forest Management Impacts on Greenhouse Gas Fluxes from Riparian Soils Along Headwater Streams
Springer Science and Business Media LLC - Tập 24 - Trang 1810-1822 - 2021
Teresa K. Silverthorn, John S. Richardson
Increasing concentrations of atmospheric greenhouse gases (GHGs; CO2, CH4, N2O) cause climate change. Depending on the conditions, soils have the potential to store carbon or to be a source of GHGs to the atmosphere. Riparian soils in particular have high potential to store carbon, but also to be sources of CH4 and N2O. Headwater streams make up a large proportion of stream length in a drainage ne...... hiện toàn bộ
Initial Soil Organic Matter Content Influences the Storage and Turnover of Litter, Root and Soil Carbon in Grasslands
Springer Science and Business Media LLC - - 2018
Shan Xu, Ping Li, Emma J. Sayer, Beibei Zhang, Jing Wang, Chunlian Qiao, Ziyang Peng, Liwei Diao, Yonggang Chi, Weixing Liu, Lingli Liu
Grassland degradation is a worldwide problem that often leads to substantial loss of soil organic matter (SOM). To estimate the potential for carbon (C) accumulation in degraded grassland soils, we first need to understand how SOM content influences the transformation of plant C and its stabilization within the soil matrix. We conducted a greenhouse experiment using C3 soils with six levels of SOM...... hiện toàn bộ
The Interaction Between Insect Outbreaks and Debris Slides in a Glacial Valley of the Eastern Canadian Shield
Springer Science and Business Media LLC - Tập 18 - Trang 1281-1289 - 2015
Martin Simard, Patrick Lajeunesse
Disturbance interactions, including compound and linked disturbances, are increasingly recognized to have important effects on landscape structure and function. Most research on linked disturbances has focused on the interaction between insect outbreaks and fire, and between fire or forest harvesting and other physical processes such as soil erosion and landslides, but to our knowledge, none have ...... hiện toàn bộ
Controls of Benthic Nitrogen Fixation and Primary Production from Nutrient Enrichment of Oligotrophic, Arctic Lakes
Springer Science and Business Media LLC - Tập 16 - Trang 1550-1564 - 2013
Gretchen M. Gettel, Anne E. Giblin, Robert W. Howarth
We examined controls of benthic dinitrogen (N2) fixation and primary production in oligotrophic lakes in Arctic Alaska, Toolik Field Station (Arctic Long-Term Ecological Research Site). Primary production in many oligotrophic lakes is limited by nitrogen (N), and benthic processes are important for whole-lake function. Oligotrophic lakes are increasingly susceptible to low-level, non-point source ...... hiện toàn bộ
Plant Species Diversity Mediates Ecosystem Stability of Natural Dune Grasslands in Response to Drought
Springer Science and Business Media LLC - Tập 18 - Trang 1383-1394 - 2015
Nils M. van Rooijen, Wanda de Keersmaecker, Wim A. Ozinga, Pol Coppin, Stephan M. Hennekens, Joop H. J. Schaminée, Ben Somers, Olivier Honnay
How plant species diversity can mediate the temporal stability of ecosystem functioning during periods of environmental stress is still a pressing question in ecology, certainly in the context of predicted increasing frequencies and intensities of climate extremes, such as drought. The vast majority of empirical research in this context is based on relatively small-scaled experiments, where plant ...... hiện toàn bộ
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