שימו לב לשני דברים
האחד כל זה עוד לפני שהעליה בחומצויות האוקנוסים השתנתה בהרבה
השני עליית מפלס הים לא תשפיע בהרבה על רוב הים אבל מנגרובים למשל עלולוים להנזק מעלייה קטנה יחסית.
Impacts of Climate Change on Australian Marine Life
Part A: Executive Summary
CSIRO Marine and Atmospheric Research
report to the Australian Greenhouse Office , Department of the Environment and Heritage
September 2006
6.4 Mangroves
Ecology
Mangrove communities are diverse assemblages of trees and shrubs that are found fringing
much of the tropical and sub-tropical coastline of Australia in sheltered areas, with the most
extensive communities found in the tropics. The mangrove flora of Australia is one of the most
diverse globally and these are highly productive systems. Mangroves act as an important buffer
between land and sea, filtering terrestrial discharge, decreasing sediment loading of coastal
waters and maintaining the integrity of coastlines. They are also valuable for their role in
nutrient and carbon cycling. Mangroves act as a nursery and breeding habitat for marine species
such as fish, crabs and prawns, including many commercially valuable species, and they also
support a variety of terrestrial species such as bird populations.
Implications
Mangroves are under threat from coastal development, river catchment modification and
pollution. While adapted to cope with salty conditions, mangroves thrive in areas where there is
plentiful input of fresh water. Sea level rise is now considered a major threat to mangroves; they
grow on shorelines with a low profile, thus, a small rise in sea level could inundate large areas
of mangroves. Increases in atmospheric CO2 may enhance mangrove growth, but this will
depend on other factors such as nutrient availability and salinity levels. Given the role of
mangroves in coastal systems, conservation of mangroves should be considered a priority
management strategy in response to climate change threats
