lessons evaluation mean nature conservation policy area national ecological network order coherence efforts surface ha land years strategy quality number species pace impulse respect conditions areas acidification particular instruments example buffer zones water depletion approach catchment sites benefits bordered measures account realisation addition government organizations part farmers individuals country estate owners development management farmer owner manager site subsidy function resources acquisition prices cabinet funds design defragmentation combat creating connections solution problem construction terms width length priority document people ambition functioning boundaries way hand pathways landscape lines elements core phase stage process objectives wishes result level ecosystems marshes woodland heath transition examples river valleys soil dunes regions event climate change disasters robustness form range deer adders otters butterflies birds mosaic types habitats extent figure left size situation stone combination words links junctions living condition preservation biodiversity levels space recreation extraction identity agreements ministry agriculture fisheries provinces locations ambitions setting delivery task rest state infrastructures region feat aim netherlands results period time oostvaardersplassen rivers days reclamation bogs dikes battle restoration interventions decision renkum valley step renkumse poort veluwe rhine demolition message forelands activities exercise terrains airfields ecoducts motorways opportunities connection axis lauwers lake dollard zeeland delta page purpose wetland woodlands numbers bitterns bittern bird population lack use value problems improvement strategisch groenproject de venen strategic project triangle amsterdam utrecht gouda nieuwkoopse vinkenveense gradient habitat guide mammal nutrient grasslands food parts germany interconnected differences year survival rates populations viability wake boar martens sorts seeds eggs fur feathers hooves plant animal intermezzo processes opportunity insight place flevo polder eighties wealth life recognition instrument decline theory city parks managers infancy creation estates steppingstones transport public works better protection waters solutions channels budget safety connectivity humber estuary north sea coast kilometres input freshwater britain m mud sand flats tide saltmarsh places grazing middle lincolnshire slacks pools winter breeding summer justification application criterion ramsar component dune systems saltmarshes lagoons sediment loads dynamic system mudflats sandflats reedbeds banks limit intrusion ouse trent wave shores body spartina anglica salicornia communities aster tripolium grass puccinellia maritima atriplex portulacoides portion community couch elytrigia atherica elymus pycnanthus reaches phragmites australis fen club bolboschoenus maritimus lagoon colony halichoerus grypus donna nook seal england south extremity toad bufo calamita features description km boothferry mouth spurn head approx uk estuaries depth concentrations variety sources sediments boulder clay holderness northernmost structure shorelines bridge navigation channel shifts section bars islands salinity bank declines precipitation mm drier periods peak flows floods west confluence falls hull hempholme weir ancholme ferriby sluice lock centres catchments nottingham leicester midlands birmingham conurbation yorkshire aire calder sheffield rotherham doncaster don growth humberside riding industry grimsby immingham cleesthorpes wetlands zone centuries point erosion century accretion loss contor defences cliffs coastline squeeze losses cord colonising salt pits grasses thrift armeria cattle sheep eel zostera marina nolti bight records cleethorpes vegetation blysmus rufus meadow poa bulbosa apera interrupta shingle spit peninsula marram ammophila arenaria patches buckthorn rhamnoides communications education awareness cepa reserves facilities ings saltfleetby theddlethorpe visitor information observatory discovery centre s edge media eg leaflets displays european codes conduct stakeholders futures partnership flood risk issues realignment work schools planet index measure world trends indices cent reports degree uncertainty notes attempt basis geography ecology taxonomy dataset groups europe america compensation weight ocean basins pages map opposite earth biomes realms type history biome composition realm patterns distinctions oceans difference rate cropland pasture tropics conversion driver forests southeast asia indomalayan decades half mediterranean broadleaf tundra exceptions millennium ecosystem assessment australasia neotropics cultivation illustrative kinds data environment action basin pacific third atlantic arctic indian seas purposes antarctica line latitude comparison asian increases fish importance cod tuna overfishing turtles end mangroves health nurseries stocks forest quarter mayaux al lakes streams drivers destruction pollution disruption supplies alteration damming irrigation power amount reservoirs dams times quantity fragmentation productivity plains migration dispersal deserts shrublands regulation percentage nilsson table discharge