Responses of estuaries to natural and ... - University of Hull

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Concentration (mg-N m -2 ) Hysteresis in response to N loads 2500 2000 1500 1000 500 0 Large Phytoplankton Seagrass No denitrification Rising Load 0 10 20 30 40 Load (mg-N m -2 d -1 ) Yes Anoxia
Enhanced production in tropical estuarine systems is usually controlled by strong pulse of freshwater Chlorophyll may increase in coastal/shelf environments with increased nutrient loading due to less light limitation ut, what about intertidal seagrasses ke eelgrass? Twilley 2004 Phytoplankton Seagrasses Mangroves Productivity 1.0 0.5 0.0 Light Availability Residence Time (months) Nutrient Inputs Reef Lagoon Estuary Delta (Low energy Wind/Tides River/Tides Ri Geomorphological Setting Terrigenous Sediment Input Eutrophication
Page 1 and 2: Responses of estuaries to natural a
Page 3 and 4: DPSIR Approach Driving forces (huma
Page 5 and 6: The endless loop Ecology Fysische s
Page 7 and 8: Science, information & data needs f
Page 9 and 10: atural factors natural variation (n
Page 11 and 12: Wind & SPM: ‘noise’ to the one
Page 13 and 14: Response area (> 100 km away) Marsd
Page 15 and 16: 36.9 e non-linear > 2-fold increase
Page 17 and 18: SPM SPM (g m -3 g m 100 ) -3 ) 120.
Page 19 and 20: North Sea tidal import & accumulati
Page 21 and 22: ocess level
Page 23 and 24: De Jonge & Elliott 2001
Page 25 and 26: ue to management easures in 1990 th
Page 32 and 33: Stable versus unstable conditions S
Page 34 and 35: oelke et al. 004 Biovolume, µm 3 l
Page 36 and 37: Ascendency vs. Overhead (“Organiz
Page 38 and 39: Overhead (“disorder”) Measure o
Page 40 and 41: • High variability intrinsic to t
Page 42 and 43: undamental & Applied Sciences Polic
Page 44 and 45: ppealing results: Convert in . indi
Page 46 and 47: Traditional Threats (a) vs. Emergin
Page 48 and 49: Soluble (a) vs Insoluble (b) proble
Page 50 and 51: Obtaining Data & Information for Ma
Page 52 and 53: Threats & Challenges e.g. #1: • l
Page 54 and 55: Cumulative Species Nos. 120 100 80
Page 56 and 57: CONDITIONS SYMPTOMS CONSEQUENCES LI
Page 58 and 59: Changes as a response to management
Page 60 and 61: Determining Unhealthy Systems? Medi
Page 62 and 63: Ecosystem health - V-O-R Approach,
Page 64 and 65: Example hypotheses for future study
Page 66 and 67: Define conceptual models of change
Page 68 and 69: From Indicators to Classification S
Page 70 and 71: Habitat Loss: • Permanent - remov
Page 73 and 74: Land Claim - still occurring: Encro
Page 75 and 76: Threats & Challenges #2: • large-
Page 77 and 78:
Priority - ‘dry feet’ first the
Page 79 and 80:
coastal adjustment set-back/ manage
Page 81 and 82:
‘Win-win-win situation’ Photos:
Page 83 and 84:
Future - biodiversity change: • D
Page 85 and 86:
Challenge - not just assessing nega
Page 87 and 88:
Challenge - to determine relative e
Page 89 and 90:
Policy strategies, development, mer
Page 91 and 92:
US - Level of expression of symptom
Page 93 and 94:
Mitigation (‘to make less severe
Page 95 and 96:
The Estuary & Coast - Major Legisla
Page 97 and 98:
Understanding & Managing Estuarine
Page 99:
Ultimate Aim: “Give us the tools
Page 102 and 103:
Harris, G., 2004. The challenge of
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Responses of estuaries to natural and ... - University of Hull

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