Intertidal wetlands essay

It has been suggested [ 56 ] that if prescribed burning were discontinued, then accumulation of organic material, raising the marsh surface, would be promoted.

The involvement of the public is enormously important for the conservation of the Efficient nail park wetlands. However, Duke [ 63 ] suggested that in the event of loss of trees from the seaward edge of stands because sea level rise exceeds Intertidal wetlands essay rate of replenishment, then more general collapse of stands could be expected.

Bicentennial Park provides education programs that include guided tours of the wetland to the public. This reed is more tolerant of lower salinity than Spartina, and a reduction in salinity often allows Phragmites to become invasive. There are three basic options for dealing with pollutants that have already entered an ecosystem.

Increasing temperature may also lead to higher incidence of fire in saltmarshes. For example, some of the most extensive saltmarshes in the world are in the Arctic [ 44 ]. This results in lower rates of transpiration, so the increase in soil salinity between episodes of tidal flooding during summertime may be reduced.

Other species with similar physiological features would also incur a cost in terms of carbon loss in order to survive anaerobic conditions, but Hovenden et al. If there is greater storm activity and damage exceeds the rate of replenishment, then larger areas within stands could be lost. An investigation of changes over 25 years in saltmarshes in northwest England, a region where a number of species are close to their geographical limits of distribution species reaching both northern and southern limits was not able to detect any signals of climate change in the changed distribution of these species [ 75 ].

On the east coast of Australia there may be an increase in species richness at high latitudes in response to climate change.

Climate Change and Intertidal Wetlands

Patches of mangroves have Intertidal wetlands essay cleared and evidence of them re-growing can be seen. He suggested that heterogeneous coasts, characterised geomorphologically as rias, mangroves would not adjust to rising sea levels as quickly as homogeneous coastlines and there would be greater likelihood of disruption of mangrove communities.

Several dominant grasses in saltmarsh, notably Spartina species and Sporobolus virginicus are C4 species: Though the removal of bunds walls is of high cost, the final result of having the original flow of water reinstated is influential.

Absolute loss of intertidal wetlands has been accompanied by degradation of much of the remainder through pollution and numerous small-scale but cumulatively large disturbances from such causes as recreational bicycle use [ 2323334 ].

Thus the responses of individual mangrove species to climate change are likely to reflect complex interactions between a number of factors [ 89 ]. Wetland biota may respond to climate change by shifting in distribution and abundance landward, evolving or becoming extinct.

As Holt [ ] remarks, predicting which will occur is difficult because there is almost no species where we know enough about its ecology, physiology, behaviour or genetics to predict its response.

Feral animals are known for their seductive impact on wetland areas and can disrupt the intricate food chains that exist within the ecosystem. We endorse in particular the comment of Rovai et al. Both saltmarshes and mangroves are most frequently found in estuaries, but can occur on open coasts if the wave energy is low [ 2 ].

They would artificially fertilise flowers and seed river flats. Under increased temperature and higher carbon dioxide the balance between C3 and C4 species might be changed. Fish ladders, or fishways are a commonly used strategy to bypass blockages.

It is also less feasible for species to keep pace with climate change in saltmarsh and mangrove forests because of their history of reclamation and fragmentation [ 2 ]. Intertidal wetlands interact ecologically with adjacent estuarine and coastal waters, and the exchange of material, in both directions, between wetlands and adjacent waters [ 234567 ] is a major reason why the need for protection and management of intertidal wetlands is given a high priority in many jurisdictions.

Waterlogging of the sediment not only affects the amount of oxygen available to roots and to the infauna, it also affects the oxidation state of a variety of anions so that, for example, in more waterlogged sites iron is present in the ferrous state, and manganese in the manganous state; these reduced ionic forms are generally more phytotoxic than the oxidised states.

Saltmarsh has a cosmopolitan distribution, being found on all continents except Antarctica. Unsurprisingly, predicted responses of saltmarsh and mangrove fauna to climate change are missing from many major reports, especially in the southern hemisphere [], with the majority of commentary on predicted shifts in distribution of fauna relating to the northern hemisphere [ ].

The following points should emerge during this discussion: In some parts of the world, such as Northern Australia, where most of the coastline is undeveloped, the response of coastal wetlands is likely to be similar to that which has happened in the past.

Fungi are important decomposers as are bacteria [ 2 ]. Species richness is highest at low latitudes on coasts with relatively high rainfall throughout the year; species richness declines with increasing latitude and with increasing seasonality of rainfall [ 1415 ].

Mangroves in general have high water use efficiency [ 90 ], which may be an adaptation to minimise water uptake from saline soils, and water use efficiency may be increased by the elevated CO2 [ 91 ].Traditional and Contemporary Management Strategies Traditional management: Taboos on hunting particular animals related to totems.

Limits on populations of tribes. An intertidal wetland is an area along a shoreline that is exposed to air at low tide and submerged at high tide.

Caution: Fix It!

This type of wetland is defined by an intertidal zone and includes its own intertidal ecosystems. Description. The main types of intertidal wetlands are mudflats.

Plants and animals that inhabit wetlands re often dependent on a particular water regime, and may be affected by changes in water levels and inundation. K Loss of Vegetation - The vegetation that occurs around the wetlands is an important component of the ecosystem.

The area is home to the saltwater plant 'Lanthanum tokens'. The plant is found in only four known areas, the Sydney Bicentennial Park wetland being one of these areas.

The size of the wetland ecosystem has decreased significantly due to human advancement and land use. The once abundant shoreline has been dramatically altered disrupting the ecosystem.

Intertidal wetlands and Great Barrier Reef case study notes-NEATLY TABLED: DOCX (N/A) Essay: Intertidal wetlands + contemporary and traditional strategies: DOCX (N/A) 19/20 Trial essay for Geography. Rhodes case study as an urban dynamic of change.


Intertidal wetlands essay
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