The impact of turbidity on seagrass and other marine life

Historically, dugongs and turtles grazed on seagrass beds within Bramble Bay, but high turbidity and nutrients eliminated these beds at least 30 years ago. Current water quality conditions of Bramble Bay are unsuitable for the re-establishment of seagrass meadows. Nitrogen in the Bramble Bay zone has been decreasing since the upgrade of the Luggage Point Waste Water Treatment Plant (WWTP) in 2001. However, poor flushing continues to contribute to the poor condition of this catchment, the area possessing the longest residence time of Moreton Bay (59 to 62 days).

Deception Bay is situated at the northern section of Moreton Bay from Newport up to the south of Bribie Island and receives input from the Caboolture River, Pumicestone Passage and several other streams including Burpengary Creek.

Extensive seagrass meadows are present in the northern part of the bay but have been threatened by toxic Lyngbya blooms. Lack of seagrass recovery is likely due to discharge of poor quality water from the Caboolture River which remains a pressure on Deception Bay’s overall ecosystem health. Poor flushing resulting in turbidity in that area of Deception Bay compounds the impact of this discharge.   Since 2002 Healthy Waterways has monitored 9 sites within the Deception Bay reporting zone.

Source: http://hlw.org.au/region/baycatchments

Seagrass Monitoring data from Wildlife Queensland Coastal Citizen Science has enabled the processing of Landsat imagery (USGS product) to understand the impact of Turbidity upon seagrass in Deception Bay. The negative impact is quite clearly seen in Sheet 10 of https://public.tableau.com/profile/wpccs#!/vizhome/mbay-sgw/Dashboard1  

A recent seagrass survey at Ormiston (Moreton Bay) noted turbidity impacting upon the coral reef located adjacent to the monitoring site.   This area supports coral gardens but they are under threat from too much turbidity. If we want to protect these amazing coral gardens we need to improve our land management within the catchment, starting with protecting natural vegetation.

 

Two great speakers at Wildlife Queensland Bayside meeting – 30th June 7:30pm – talking about Gliding Marsupials

Free public talk about Australia’s gliding marsupials.

Friday 30th June 2017  7:30pm at Runnymede Road, Indigiscapes Capalaba, just off Redland Bay Road.

Our Speaker is Matt Cecil from Wildlife Queensland and Jenny Davis from Redland Council.  They will be talking about our local gliding marsupials.

All six species of Australian glider are found in Queensland, five of them in the south-east of the State. They range in size from the tiny feathertail glider, which can sit in a child’s hand, to the solitary and regionally vulnerable greater glider.

Come along to a free night of great talks and hear about our local gliders and about the great work that is being done by the Queensland Glider Network  who is helping protect these unique and beautiful creatures for future generations.

A light supper is provided.

NCCARF Climate Change Adaptation Webinar Series

Click here to view the NCCARF Climate Change Adaptation Webinar Series.

Extreme climate events – heatwaves, floods, windstorms and bushfires – can quickly become disasters if communities aren’t prepared. Extremes are how we will feel the climate changing – more so than creeping averages. So how do we prepare for these dramatic events? Join our webinar panel looking at projections of extreme climate in the future, the impacts these events may have on our built environment and communities, and how we can adapt.

Click here to view the NCCARF Climate Change Adaptation Webinar Series.

World Migratory Bird Day – 10th May 2017

This video has been created by a UN Online Volunteer to help better understand how Their Future and Our Future are interconnected and raise awareness on the urgent need for a sustainable management of our resources all around the world – for migratory birds, and for humankind.

YouTube: https://youtu.be/gZBfYwZ-yD8

World Migratory Bird Day (WMBD) was initiated in 2006 and is an annual awareness-raising campaign highlighting the need for the conservation of migratory birds and their habitats. It has a global outreach and is an effective tool to help raise global awareness of the threats faced by migratory birds, their ecological importance, and the need for international cooperation to conserve them.

Every year people around the world take action and organize public events such as bird festivals, education programmes, exhibitions and bird-watching excursions to celebrate WMBD. All these activities can also be undertaken at any time on the year because that countries or regions observing the peak of migrations at different times, but the main day for the international celebrations is 10 May.

What is the least I can do for adaptation?

At a glance

  • Many organisations attempting to adapt to climate change have limited financial and human resources and capacity.  Adapting to climate change is just one more pressure that must be dealt with among many others, creating competition for resources within organisations.
  •  We present here a series of actions that are the least that can be done in terms of adaptation planning, and that require very minimal resources.
  • A good starting point is to use existing information and data (climate change projections, maps, state/local government reports) to understand the broader climate change risk of your area and the potential implications for your business.
  • The principal goal of this low-resources approach is to evaluate the urgency of the situation. Do the risks from climate change present an imminent threat that must be dealt with now, or is it possible to safely delay action into the future?
  • If taking this approach, it is not sufficient to simply gather evidence to support the decision that action can be delayed. It is necessary at a minimum to decide when to revisit the situation to re-evaluate the risks.

Source: Coast Adapt.

CoastAdapt is an information delivery and decision support framework. It is for anyone with an interest in Australia’s coast, the risks it faces from climate change and sea-level rise, and what can be done to respond to those risks.

CoastAdapt contains information and guidance to help people from all walks of life understand climate change and the responses available to manage the impacts. Although there is a focus on Australia’s coastal regions, CoastAdapt also links the user to climate change resources on the NCCARF website and beyond that are relevant to Australia more broadly.