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Previous surveys have revealed that Humberstone Fitties Lagoon has a rich community comprising many lagoon specialist species. It is the most northerly site in Europe for Gammarus insensibilis an amphipod protected under schedule 5 of the Wildlife and Countryside Act 1981. It is known that Gammarus insensibilis is reliant upon the alga Chaetomorpha linum for which this is the most northerly English site. This survey was carried out, between May and September 2001, to assess the current status of the lagoon community with particular emphasis on the population of Gammarus insensibilis. Previous studies had also reported the loss of Hydrobia ventrosa, which has now been re-found in large numbers. There was also confusion over the identity of bryozoan present in the lagoon, which was confirmed to be Conopeum seurati and the presence of a Cockle species Cerastoderma, which was found to exist only as dead shells and should not be considered part of the lagoon fauna. The lagoon was found to be in good condition with the discovery of five new species and the rediscovery of one that was previously lost. Two species that had been previously recorded were not found in this study, Polydora ciliata and Caulleriella (zetlandica), the former may well be extinct as the site no longer appears to support its habitat requirements, the latter may persist in small numbers and may have been missed. It was notable that this was the first time fish have been reported in the lagoon with two species now appearing to be established, further monitoring may be required to determine their impact on the lagoon. Humberstone Fitties Lagoon was found to contain abundant dense submerged vegetation composed of Chaetomorpha linum and Ruppia maritima; between they occupied most of the lagoon with Ruppia favouring shallower water than Chaetomorpha. The water level and salinity of the lagoon was observed to fluctuate over the course of the year in an expected natural pattern. High spring water levels were followed by a decrease with a corresponding salinity increase due to evaporation over the summer until the site flooded on the spring tides in autumn. No water is taken on over summer as the lagoon has no direct connection to the sea only tides high enough to overtop the banks are sufficient. The lagoonâ??s salinity was found to vary from 11 0/00 to 24 0/00, which is the preferred range of most species present. Four saltmarsh pools border the main lagoon, which experience drying out and hypersalinity during the summer and so support impoverished fauna. There is evidence however that one of these pools may now be subject to more regular tidal inundation resulting in more favourable conditions and may be developing into a lagoon. Many of the individuals present in this pool do show signs of tidal stranding and so this pool requires monitoring to determine its true nature. The threats facing the lagoon are discussed and management to prevent them and to maintain the general condition of the lagoon are discussed.
Natural England
OGL
| Other details | ||
| Internal code | Internally assigned metadata identifier | 2325 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | Natural England (NE) Survey of Humberstone Fitties Lagoon |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 13ac25a30a30cef6dc086e68adf96d8e |
| Resource Identifier | This is the code assigned by the data owner. | NATENG000118 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2001-05-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2001-09-01 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | inapplicable |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Previous surveys have revealed that Humberstone Fitties Lagoon has a rich community comprising many lagoon specialist species. It is the most northerly site in Europe for Gammarus insensibilis an amphipod protected under schedule 5 of the Wildlife and Countryside Act 1981. It is known that Gammarus insensibilis is reliant upon the alga Chaetomorpha linum for which this is the most northerly English site. This survey was carried out, between May and September 2001, to assess the current status of the lagoon community with particular emphasis on the population of Gammarus insensibilis. Previous studies had also reported the loss of Hydrobia ventrosa, which has now been re-found in large numbers. There was also confusion over the identity of bryozoan present in the lagoon, which was confirmed to be Conopeum seurati and the presence of a Cockle species Cerastoderma, which was found to exist only as dead shells and should not be considered part of the lagoon fauna. The lagoon was found to be in good condition with the discovery of five new species and the rediscovery of one that was previously lost. Two species that had been previously recorded were not found in this study, Polydora ciliata and Caulleriella (zetlandica), the former may well be extinct as the site no longer appears to support its habitat requirements, the latter may persist in small numbers and may have been missed. It was notable that this was the first time fish have been reported in the lagoon with two species now appearing to be established, further monitoring may be required to determine their impact on the lagoon. Humberstone Fitties Lagoon was found to contain abundant dense submerged vegetation composed of Chaetomorpha linum and Ruppia maritima; between they occupied most of the lagoon with Ruppia favouring shallower water than Chaetomorpha. The water level and salinity of the lagoon was observed to fluctuate over the course of the year in an expected natural pattern. High spring water levels were followed by a decrease with a corresponding salinity increase due to evaporation over the summer until the site flooded on the spring tides in autumn. No water is taken on over summer as the lagoon has no direct connection to the sea only tides high enough to overtop the banks are sufficient. The lagoonâ??s salinity was found to vary from 11 0/00 to 24 0/00, which is the preferred range of most species present. Four saltmarsh pools border the main lagoon, which experience drying out and hypersalinity during the summer and so support impoverished fauna. There is evidence however that one of these pools may now be subject to more regular tidal inundation resulting in more favourable conditions and may be developing into a lagoon. Many of the individuals present in this pool do show signs of tidal stranding and so this pool requires monitoring to determine its true nature. The threats facing the lagoon are discussed and management to prevent them and to maintain the general condition of the lagoon are discussed. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | N/A |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitats and biotopes | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat extent | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitat characterisation | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.593 |
| East | The eastern-most limit of the data resource in decimal degrees | 0.2401 |
| South | The southern-most limit of the data resource in decimal degrees | 53.4856 |
| West | The western-most limit of the data resource in decimal degrees | -0.1108 |
| Regional sea | inapplicable | |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Natural England | |
| Individual name | Marine GI Data Natural England | |
| Phone | +44 (0)300 060 3900 | |
| Fax | +44 (0)300 060 2356 | |
| Delivery point | Foss House, Kings Pool, 1-2 Peasholme Green | |
| Postal code | YO1 7PX | |
| City | York | |
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Natural England | |
| Individual name | Marine GI Data Natural England | |
| Phone | +44 (0)300 060 3900 | |
| Fax | +44 (0)300 060 2356 | |
| Delivery point | Foss House, Kings Pool, 1-2 Peasholme Green | |
| Postal code | YO1 7PX | |
| City | York | |
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Natural England | |
| Individual name | Marine GI Data Natural England | |
| Phone | +44 (0)300 060 3900 | |
| Fax | +44 (0)300 060 2356 | |
| Delivery point | Foss House, Kings Pool, 1-2 Peasholme Green | |
| Postal code | YO1 7PX | |
| City | York | |
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | Natural England | |
| Individual name | Marine GI Data Natural England | |
| Phone | +44 (0)300 060 3900 | |
| Fax | +44 (0)300 060 2356 | |
| Delivery point | Foss House, Kings Pool, 1-2 Peasholme Green | |
| Postal code | YO1 7PX | |
| City | York | |
| Dataset constraints | ||
| 21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | OGL |
| 20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | otherRestrictions |
| Use constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | OGL |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2021-11-01 |
| Metadata date | The date when the content of this metadata record was last updated. | 2021-11-09 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery metadata standard |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |
© OpenStreetMap contributors