نتایج جستجو برای: ecosystem components

تعداد نتایج: 468558  

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2003
Malin Falkenmark

The paper has its focus on water's key functions behind ecosystem dynamics and the water-related balancing involved in a catchment-based ecosystem approach. A conceptual framework is being developed to address fundamental trade-offs between humans and ecosystems. This is done by paying attention to society's unavoidable landscape modifications and their unavoidable ecological effects mediated b...

2005
Jennifer Dyke Sean B. Cash Samuel D. Brody Sara Thornton

The North American timber industry owns or controls a substantial amount of commercial timberland, and it is within this privately held acreage that major portions of critical natural habitat and areas of biodiversity are found. Because significant ecosystem components and processes lie within the ownership of forestry operations, industry participation in collaborative ecosystem management ini...

2006

Interactions between photosynthetic substrate supply and temperature in determining the rate of three respiration components (leaf, belowground and ecosystem respiration) were investigated within three environmentally controlled, Populus deltoides forest bays at Biosphere 2, Arizona. Over 2 months, the atmospheric CO2 concentration and air temperature were manipulated to test the following hypo...

2016
Momme Butenschön James Clark John N. Aldridge Julian Icarus Allen Yuri Artioli Jeremy Blackford Jorn Bruggeman Pierre Cazenave Stefano Ciavatta Susan Kay Gennadi Lessin Sonja van Leeuwen Johan van der Molen Lee de Mora Luca Polimene Sevrine Sailley Nicholas Stephens Ricardo Torres

The European Regional Seas Ecosystem Model (ERSEM) is one of the most established ecosystem models for the lower trophic levels of the marine food web in the scientific literature. Since its original development in the early nineties it has evolved significantly from a coastal ecosystem model for the North Sea to a generic tool for ecosystem simulations from shelf seas to the global ocean. The ...

Journal: :Organization Science 2017
Rahul Kapoor Shiva Agarwal

We study the phenomenon of business ecosystems in which a platform firm orchestrates the functioning of the ecosystem by providing a platform and setting the rules for other complementor firms to participate in it. We develop a theoretical framework to explain how the structural and evolutionary features of the ecosystem may shape the extent to which participating complementor firms can sustain...

Journal: :Ecology 2008
Oswald J Schmitz Jonathan H Grabowski Barbara L Peckarsky Evan L Preisser Geoffrey C Trussell James R Vonesh

An important goal in ecology is developing general theory on how the species composition of ecosystems is related to ecosystem properties and functions. Progress on this front is limited partly because of the need to identify mechanisms controlling functions that are common to a wide range of ecosystem types. We propose that one general mechanism, rooted in the evolutionary ecology of all speci...

2004
L. J. SHANNON C. L. MOLONEY

casted the increasing need for fisheries managers to take species interactions into account. It is now widely recognized that ecosystem effects need to be considered in managing fisheries (Pauly 1998, Beamish and Mahnken 1999, Gislason et al. 2000). Steele (1996) concluded that a “regime shift in fisheries management” is required if one is to manage fisheries successfully in the context of ecos...

2014
Ramnatthan Alagappan Sourav Das

Cloud communication service (CCS) with its simplicity and lower investment cost is becoming increasingly popular. In contrast to its growing popularity, very little is known about the internals of CCS with respect to its architecture and protocols. To gain insights into CCS, we study a popular cloud communication service ”Twilio” using gray box techniques. In our study, we provide insights into...

2006
Elizabeth G. King Richard J. Hobbs

We present an ecological framework for considering ecosystem degradation and restoration, particularly in rangelands and arid environments. The framework is a synthesis of three conceptual models previously developed by several rangeland and restoration ecologists. We focus first on distinctions and connections between structural and functional components of rangeland ecosystems and then on dis...

2016
Kathleen L. Arnolds Catherine A. Lozupone

The trillions of microbes that inhabit the human gut (the microbiota) together with the host comprise a complex ecosystem, and like any ecosystem, health relies on stability and balance. Some of the most important members of the human microbiota are those that help maintain this balance via modulation of the host immune system. Gut microbes, through both molecular factors (such as capsular comp...

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