Sentences with phrase «marine ecosystem structure»

An extreme climatic event alters marine ecosystem structure in a global biodiversity hotspot

Not exact matches

«The concept of «maintaining ecological function» refers to the balance of ecological processes necessary for the reef ecosystem as a whole to persist, but perhaps in a different form,» a spokesperson for Great Barrier Reef Marine Park Authority explained, «noting the composition and structure may differ from what is currently seen today.»

Many marine biologists think of the world's biggest alga as the keystone species of its ecosystem, not only in terms of its structure — a huge forestlike environment under the sea — but also in terms of its tremendous productivity in supplying food for the near - shore ecosystem.

Regional studies suggest that marine heat waves may provoke «widespread loss of habitat - forming species such as kelps and corals, drive shifts in species distributions, alter the structure of communities and ecosystems, and have economic impacts on aquaculture and seafood industries through declines in important fishery species,» they note.

Special living conditions and functions in the marine ecosystem forces them to produce a vast number of bioactive metabolites with unique structures.

«The near extinction of sea otters is one of the most dramatic examples of human - induced impacts to the structure and functioning of temperate nearshore marine ecosystems,» said Rebecca G. Martone, of the Center for Ocean Solutions at Stanford University.

Thus, past and future increases in atmospheric nitrogen deposition have the potential to alter the base of the marine food web; and, in the long term, the structure of the ecosystem.

Bob Pressey: Maximize returns on conservation Douglas J. McCauley: Mega-parks need greater oversight Lance Morgan: Protect diverse marine habitats Hugh Possingham: Represent ecosystems Lee White: Manage parks professionally Emily Darling: Conserve climate refuges Peter J. S. Jones: Assess governance structures

Her international research programme focuses on the impacts of global climate change and ocean acidification on coastal marine biodiversity and the consequences for ecosystem structure and functioning, and spans the UK, Europe, USA and NZ.

«The concept of «maintaining ecological function» refers to the balance of ecological processes necessary for the reef ecosystem as a whole to persist, but perhaps in a different form, noting the composition and structure may differ from what is currently seen today,» a spokeswoman for the Great Barrier Reef Marine Park Authority explained.

-- Climate impacts: global temperatures, ice cap melting, ocean currents, ENSO, volcanic impacts, tipping points, severe weather events — Environment impacts: ecosystem changes, disease vectors, coastal flooding, marine ecosystem, agricultural system — Government actions: US political views, world - wide political views, carbon tax / cap - and - trade restrictions, state and city efforts — Reducing GHGs: + electric power systems: fossil fuel use, conservation, solar, wind, geothermal, nuclear, tidal, other + transportation sector: conservation, mass transit, high speed rail, air travel, auto / truck (mileage issues, PHEVs, EVs, biofuels, hydrogen) + architectural structure design: home / office energy use, home / office conservation, passive solar, other

There may be changes in nutrient availability, biological productivity, and the structure of marine ecosystems from the bottom of the food chain to the top.

Overall, climate change will lead to large - scale shifts in the patterns of marine productivity, biodiversity, community composition and ecosystem structure.

The general goal of these projects was to improve our understanding of how the response of arctic marine ecosystems to climate warming will alter food web structure and ecosystem services provided to Northerners.

With the Canadian led IPY - CFL sampling program, new highlights on winter ecological processes and confirmation of some of the earlier observations made during previous and scarce overwintering scientific studies help to refine our understanding of the structure and functioning of the arctic marine ecosystem.

This new concept of anthropogenic impacts on seawater pH formulated here accommodates the broad range of mechanisms involved in the anthropogenic forcing of pH in coastal ecosystems, including changes in land use, nutrient inputs, ecosystem structure and net metabolism, and emissions of gases to the atmosphere affecting the carbon system and associated pH. The new paradigm is applicable across marine systems, from open - ocean and ocean - dominated coastal systems, where OA by anthropogenic CO2 is the dominant mechanism of anthropogenic impacts on marine pH, to coastal ecosystems where a range of natural and anthropogenic processes may operate to affect pH.

Accordingly, there are three main vectors of anthropogenic impacts on marine pH: (1) emissions of CO2, and other gases affecting marine pH, to the atmosphere; (2) perturbation of watershed processes affecting the inputs of nutrients, organic and inorganic carbon, acids and carbonate alkalinity to the ocean; and (3) impacts on ecosystem structure (Table 1).

Pauley and other marine biologists have shown that drastically reduced populations in marine fishes caused by overfishing may never recover because overfishing has created irreversible changes in ecosystem structure.

Such alterations in the spatial and temporal distribution of marine organisms ultimately drive subsequent changes in ecosystem structure and functioning [1,12 — 15].

Studies in both freshwater and marine ecosystems have demonstrated significant impacts of anthropogenic acidification on olfactory abilities of fish and macroinvertebrates, leading to impaired behavioural responses, with potentially far - reaching consequences to population dynamics and community structure.

The workshop will consist of keynote lectures from these different disciplines, and then sessions will be structured around particular applications sectors including: water resources, long - term risk management, marine ecosystems, extreme events, coastal processes and public lands.