News and Requests
Are you willing and able to present a wildlife related talk at one of our indoor meetings?
If so we would be delighted to hear from you.
Please contact the group on firstname.lastname@example.org
Magazine Distributers Wanted
Would you be willing to distribute magazines on behalf of Essex Wildlife Trust in the Southend-on-Sea and Rochford area?
We have vacancies
If you are interested in helping please contact Neil Williams at email@example.com
Information Feedback from Recent Meetings
Information feedback from Rachel Langley following "Living Seas" Meeting held 25 January 2018
- Overwintering macroalgal mats – these primarily comprise of green algae from the genera Ulva (sea lettuce), Chaetomorpha and Cladophora. As far as I’m aware, EWT haven’t yet done any work identifying the species present at specific locations in Essex but it may be something interesting to explore. To reiterate what we discussed last week, the main issues of the mats are that they:
- Prevent saltmarsh species from colonising the area
- Can increases erosion of mudflats
- Discourage some feeding by waders
- Can effect macro-invertebrates (which in turn can affect birds) – lack of sunlight, decomposition of lower sections of the mats can cause anoxic conditions etc.
Pacific oysters at Colne Point – I’ve been in touch with Bob Seago, who the Warden here and he provided me a good update:
- The rock or Pacific oysters very soon became very numerous on the intertidal gravel flats, rendering it something like a reef. I was involved with Malcom Hardy, who I believe is now one of our trustees setting up a transect on the shore. He was licenced to study native oysters that could be sampled just out from that zone.
- The Colchester Oyster Fishery sought and gained permission to collect the rock oysters at Colne Point and has been doing so for a number of years. They come out at low tide from Wivenhoe or Colchester and collect large numbers of them
- The large amounts of oystershell provide a sheltered substrate for various creatures. I know we found a baby Lumpsucker fish once, but people are concerned that the massive filtering effect of these oysters may threaten other filter feeders such as Blue Mussels and native oysters.