Includes all data collected since 2008 about tidal wetland condition in Delaware. Data is collected in the field using the Mid-Atlantic Tidal Wetland Rapid Assessment Method (MidTRAM).
This dataset has the following 114 columns:
| Column Name | API Column Name | Data Type | Description | Sample Values |
|---|---|---|---|---|
| Site Number | site_number | text | Unique numeric identifier for each site | IB0002 IB0001 SJ0015 SJ0045 APPO-3038 view top 100 |
| Date | date | calendar_date | Date site was assessed | 2008-07-10T00:00:00.000 2008-07-31T00:00:00.000 2008-07-16T00:00:00.000 2008-08-07T00:00:00.000 2008-07-24T00:00:00.000 view top 100 |
| MidTRAM Version | midtram_version | number | Version of protocol used to assess site | 3.0 1.0 4.1 4.0 view top 100 |
| Watershed | watershed | text | HUC10 watershed that the wetland site is within | Inland Bays Murderkill St. Jones Broadkill Mispillion view top 100 |
| Sub-watershed | sub_watershed | text | HUC12 watershed that the wetland site is within | Lower St. Jones River Murderkill River Rehoboth Bay C&D Canal East Cedar Swamp view top 100 |
| AA moved? | aa_moved | checkbox | Indicates if the site center point and assessment area had to be moved from the original random location | false true view top 100 |
| Reason for moving | reason_for_moving | text | Describes why the site center point and assessment area had to be moved from the original random location | avoid upland avoid openwater >10% open water to avoid upland avoid open water view top 100 |
| Classification | classification | text | Specifies what type of wetland the site is, according to protocol's classification system | Expansive Estuarine Tidal Fringe Expansive estuarine tidal fringe Fringing Estuarine Tidal Fringe Fringing Freshwater Tidal Fringe Expansive Palustrine Tidal view top 100 |
| Purpose | purpose | text | Reason for field visit (assessment or reference) | Assessment Reference view top 100 |
| Marsh type | marsh_type | text | Specifies if wetland is natural or has been manipulated in some way by human activity to be restored, re-established, enhanced, rehabilitated, or impounded | Natural Impoundment Re-establishment Enhancement view top 100 |
| Tide stage | tide_stage | number | Tidal stage the best represents the AA during the site visit, where 5 is highest and 1 is lowest | 2 3 4 1 5 view top 100 |
| Water on surface (cm) | water_on_surface_cm | text | Measurement (cm) that best represents the amount of standing water on the marsh surface in the AA | 0 0-1 0-2 0-5 0-4 view top 100 |
| Marsh community | marsh_community | text | A general description of the AA based on plant species present | Low Marsh High Marsh fresh Mix of Both view top 100 |
| Distance to upland (m) | distance_to_upland_m | number | Estimated distance (m) from the edge of the AA to the closest major upland body that is not an island | 0 1 400 10 125 view top 100 |
| Distance to open water (m) | distance_to_open_water_m | number | Estimated distance (m) from the edge of the AA to the closest source of open water that is >30m wide | 0 60 30 50 250 view top 100 |
| Salinity (ppt) | salinity_ppt | number | Salinity (ppt) of the surface or creek water using a YSI or other digital water quality instrument | 0 10 6 1 2 view top 100 |
| Unveg/mud/sand | unveg_mud_sand | number | Midpoint of percent cover class for unvegetated areas, mud, or sand in the AA | 0 2.5 0.5 15.5 38 view top 100 |
| Spartina alterniflora | spartina_alterniflora | number | Midpoint of percent cover class for Spartina alterniflora in the AA | 0 88.5 63 38 15.5 view top 100 |
| Spartina cynosuroides | spartina_cynosuroides | number | Midpoint of percent cover class for Spartina cynosuroides in the AA | 0 15.5 0.5 38 2.5 view top 100 |
| Schoenoplectus americanus | schoenoplectus_americanus | number | Midpoint of percent cover class for Schoenoplectus americanus in the AA | 0 2.5 0.5 15.5 63 view top 100 |
| Spartina patens/Distichlis spicata | spartina_patens_distichlis | number | Midpoint of percent cover class for mixed community of Spartina patens and Distichlis spicata in the AA | 0 2.5 15.5 0.5 38 view top 100 |
| Phragmites australis | phragmites_australis | number | Midpoint of percent cover class for Phragmites australis in the AA | 0 2.5 15.5 0.5 88.5 view top 100 |
| Iva frutescens | iva_frutescens | number | Midpoint of percent cover class for Iva frutescens in the AA | 0 2.5 0.5 15.5 63 view top 100 |
| Juncus roemerianus | juncus_roemerianus | number | Midpoint of percent cover class for Juncus roemerianus in the AA | 0 0.5 15.5 38 view top 100 |
| Spartina alterniflora/Spartina cynosuroides | spartina_alterniflora_spartina | number | Midpoint of percent cover class for mixed community of Spartina alterniflora and Spartina cynosuroides in the AA | 0 2.5 15.5 0.5 38 view top 100 |
| root mat | root_mat | number | Midpoint of percent cover class for all areas in the AA covered by root mat | 88.5 63 100 38 0 view top 100 |
| pannes/pools/creeks | pannes_pools_creeks | number | Midpoint of percent cover class for pannes, pools, or creeks in the AA | 0 2.5 15.5 0.5 38 view top 100 |
| open water | open_water | number | Midpoint of percent cover class for open water (>30m wide) in the AA | 0 0.5 2.5 15.5 100 view top 100 |
| ditches | ditches | number | Midpoint of percent cover class for ditches in the AA | 0 2.5 0.5 15.5 1.5 view top 100 |
| unhealthy marsh | unhealthy_marsh | number | Midpoint of percent cover class for unhealthy marsh in the AA (i.e. deterioration or sudden wetland dieback) | 0 15.5 2.5 0.5 38 view top 100 |
| Spartina patens | spartina_patens | number | Midpoint of percent cover class for Spartina patens in the AA | 0 2.5 15.5 0.5 38 view top 100 |
| Distichlis spicata | distichlis_spicata | number | Midpoint of percent cover class for Distichlis spicata in the AA | 0 15.5 2.5 0.5 38 view top 100 |
| Salicornia virginica | salicornia_virginica | number | Midpoint of percent cover class for Salicornia virginica in the AA | 0 0.5 2.5 15.5 view top 100 |
| Other1% | other1 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 15.5 2.5 0.5 38 63 view top 100 |
| Other1 | other1_1 | text | Description of additional plant community in the AA other than those previously listed | Spartina alterniflora/Spartina patens Spartina alterniflora/Distichlis spicata Spartina alterniflora/Salicornia virginica Zizania aquatica Typha angustifolia view top 100 |
| Other2% | other2 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 15.5 2.5 0.5 38 0 view top 100 |
| Other2 | other2_1 | text | Description of additional plant community in the AA other than those previously listed | Typha angustifolia Sagittaria sp. Spartina alterniflora/Spartina patens Pontederia cordata Zizania aquatica view top 100 |
| Other3% | other3 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 2.5 15.5 0 0.5 38 view top 100 |
| Other3 | other3_1 | text | Description of additional plant community in the AA other than those previously listed | Sagittaria sp. Pontederia cordata Spartina alterniflora/Spartina patens Peltandra virginica Phragmites australis/Iva frutescens view top 100 |
| Other4% | other4 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 0 15.5 2.5 0.5 38 view top 100 |
| Other4 | other4_1 | text | Description of additional plant community in the AA other than those previously listed | Peltandra virginica Nuphar sp. Amaranthus cannabinus Pontederia cordata Persicaria sp. view top 100 |
| Other5% | other5 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 0 15.5 2.5 38 0.5 view top 100 |
| Other5 | other5_1 | text | Description of additional plant community in the AA other than those previously listed | Impatiens capensis Amaranthus cannabinus Persicaria sp. Juncus sp. Typha sp. view top 100 |
| Other6% | other6 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 15.5 2.5 38 0.5 view top 100 |
| Other6 | other6_1 | text | Description of additional plant community in the AA other than those previously listed | Impatiens capensis Peltandra virginica Persicaria sp. Cuscuta sp. Persicaria sp./Juncus sp./Impatiens capensis view top 100 |
| Other7% | other7 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 15.5 0.5 2.5 38 view top 100 |
| Other7 | other7_1 | text | Description of additional plant community in the AA other than those previously listed | Persicaria sp. Nuphar sp. Typha sp. unknown grass Peltandra virginica view top 100 |
| Other8% | other8 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 15.5 0.5 2.5 view top 100 |
| Other8 | other8_1 | text | Description of additional plant community in the AA other than those previously listed | Mikania scandens Impatiens capensis unknown grass sp. Thelypteris palustris Tsuga sp. view top 100 |
| Other9% | other9 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 0.5 2.5 15.5 38 view top 100 |
| Other9 | other9_1 | text | Description of additional plant community in the AA other than those previously listed | Amaranthus cannabinus Cuscuta sp. Lythrum salicaria Iris versicolor Scirpus cyperinus view top 100 |
| Other10% | other10 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 0.5 15.5 2.5 view top 100 |
| Other10 | other10_1 | text | Description of additional plant community in the AA other than those previously listed | Althaea officinalis Nuphar sp. Persicaria punctata Persicaria sp. Pontederia cordata view top 100 |
| Other11% | other11 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 0.5 15.5 38 view top 100 |
| Other11 | other11_1 | text | Description of additional plant community in the AA other than those previously listed | Hydrilla sp. several tree sp. Zizania aquatica view top 100 |
| Other12% | other12 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 2.5 view top 100 |
| Other12 | other12_1 | text | Description of additional plant community in the AA other than those previously listed | Persicaria sp. unknown shrub view top 100 |
| Other13% | other13 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 2.5 15.5 view top 100 |
| Other13 | other13_1 | text | Description of additional plant community in the AA other than those previously listed | Impatiens capensis unknown grass sp. view top 100 |
| Other14% | other14 | number | Midpoint of percent cover class for an additional plant community in the AA other than those previously listed | 2.5 15.5 view top 100 |
| Other14 | other14_1 | text | Description of additional plant community in the AA other than those previously listed | Persicaria sp. unknown grass sp. view top 100 |
| Depth of organic layer (cm) | depth_of_organic_layer_cm | text | Describes how deep the organic layer extended below the surface in a soil sample at the site | >16 >60 >40 20 >50 view top 100 |
| Stability of AA | stability_of_aa | text | Describes the current physical stability of the wetland within the AA | Healthy & Stable Beginning to deteriorate and/or some fragmentation Severe deterioration and/or severe fragmentation view top 100 |
| B1: Estimated % with 5m-buffer | b1_estimated_with_5m_buffer | number | Percent of AA perimeter that has at least 5m of natural or semi-natural condition land cover | 100 95 80 90 75 view top 100 |
| B1: % with 5m-buffer rating | b1_with_5m_buffer_rating | number | Metric rating based on percent of AA perimeter that has at least 5m of natural or semi-natural condition land cover | 12 9 6 3 view top 100 |
| B1: Estimated % with 10m-buffer | b1_estimated_with_10m_buffer | text | Percent of AA perimeter that has at least 5m of natural or semi-natural condition land cover that is at least 10m in width | 100.0 32.8 39.6 50.1 54.7 view top 100 |
| B1: % with 10m-buffer rating | b1_with_10m_buffer_rating | text | Metric rating based on percent of AA perimeter that has at least 5m of natural or semi-natural condition land cover that is at least 10m in width | 12 3 6 9 view top 100 |
| B2: Avg. buffer width | b2_avg_buffer_width | number | Average buffer width (m) surrounding the AA that is in natural or semi-natural condition | 250.0 205.0 236.0 204.0 218.0 view top 100 |
| B2: Avg. buffer width rating | b2_avg_buffer_width_rating | number | Metric rating based on average buffer width (m) surrounding the AA that is in natural or semi-natural condition | 12 9 6 3 view top 100 |
| B2: % natural land uses in buffer | b2_natural_land_uses_in_buffer | text | Percent of the buffer area that is contiguous between the AA and 250m buffer edge and in a natural or semi-natural state | 100.0 60.0 22.9 23.0 25.6 view top 100 |
| B2: % natural land uses in buffer rating | b2_natural_land_uses_in_buffer_1 | text | Metric rating based on percent of the buffer area that is contiguous between the AA and 250m buffer edge and in a natural or semi-natural state | 6 3 9 12 view top 100 |
| B3: % surrounding development | b3_surrounding_development | text | Percent of developed land within 250m from the edge of the AA | 0 10 25 1 5 view top 100 |
| B3: Surrounding development rating | b3_surrounding_development_1 | number | Metric rating based on percent of developed land within 250m from the edge of the AA | 12 9 3 6 view top 100 |
| B3: Altered/high impact land use % unnatural | b3_altered_high_impact_land | text | Percent of the buffer area that is an altered (unnatural) land use | 0.0 4.4 17.9 10.7 1.1 view top 100 |
| B3: Altered/high impact land use % high impact | b3_altered_high_impact_land_1 | text | Percent of the buffer area that is a high impact land use | 0.0 2.1 11.0 4.4 8.8 view top 100 |
| B3: Altered/high impact land use rating | b3_altered_high_impact_land_2 | text | Metric rating based on percent of the buffer area that is an altered (unnatural) land use or a high impact land use | 9 12 6 3 view top 100 |
| B4: 250m landscape condition | b4_250m_landscape_condition | number | Landscape condition within 250m surrounding the AA center point based on the nativeness of vegetation, disturbance to substrate, and extent of human visitation | 6 9 3 12 view top 100 |
| B5: Marsh habitat richness # of communities | b5_marsh_habitat_richness | number | Number of different communities and habitats found within 250m of the AA | 5 4 6 7 3 view top 100 |
| B5: Marsh habitat richness rating | b5_marsh_habitat_richness_1 | number | Metric rating based on the number of different communities and habitats found within 250m of the AA | 12 8 view top 100 |
| B5/6: Barriers to landward migration % perimeter obstructed | b5_6_barriers_to_landward | number | Percent of landward perimeter of wetland within 250m that has physical barriers preventing wetland migration inland | 0.0 100.0 50.0 10.0 20.0 view top 100 |
| B5/6: Barriers to landward migration rating | b5_6_barriers_to_landward_1 | number | Metric rating based on percent of landward perimeter of wetland within 250m that has physical barriers preventing wetland migration inland | 12 3 6 9 view top 100 |
| H1: Ditching & draining rating | h1_ditching_draining_rating | number | Metric rating based on the extent of ditching and draining in the AA (none, low, moderate, or severe) | 12 6 9 3 0 view top 100 |
| H1: Ditching & excavation (OMWM) rating | h1_ditching_excavation_omwm | text | Metric rating based on the percent of the AA that had excavated ditches or OMWM pools | 12 . view top 100 |
| H1b:Point sources tidal fresh rating | h1b_point_sources_tidal_fresh | text | Metric rating based on the extent of point sources (absent, low, moderate, or high) in the AA and 250m buffer (tidal freshwater wetlands only) | . 12 6 3 view top 100 |
| H2: Estimate % fill | h2_estimate_fill | number | Estimated percent of the AA that has fill | 0 1 10 2 5 view top 100 |
| H2: Fill rating | h2_fill_rating | number | Metric rating based on the estimated percent of the AA that has fill | 12 9 3 6 0 view top 100 |
| H3: Diking & restriction rating | h3_diking_restriction_rating | number | The presence of dikes or other tidal flow restrictions | 12 9 3 6 0 view top 100 |
| H4: Point source rating | h4_point_source_rating | number | Metric rating based on the extent of point sources (absent, low, moderate, or high) in the AA and 250m buffer | 12 3 9 6 0 view top 100 |
| H4: Docks/duck blinds rating | h4_docks_duck_blinds_rating | text | Area of AA and buffer covered by man-made structures, such as docks and duck blinds | 12 9 3 6 view top 100 |
| HAB1: Structural patch type # patches | hab1_structural_patch_type | number | Number of different types of structural habitat patch types found within the AA | 3 2 4 5 1 view top 100 |
| HAB1: Structural patch type rating | hab1_structural_patch_type_1 | number | Metric rating based on the number of different types of structural habitat patch types found within the AA | 6 3 9 12 view top 100 |
| HAB1/2:Bear cap:final-intial avg. | hab1_2_bear_cap_final_intial | number | Average bearing capacity, a measure of soil resistance (cm) | 2.88 2.38 3.19 3.75 2.56 view top 100 |
| HAB1/2:Bear cap: hollows present? | hab1_2_bear_cap_hollows | checkbox | Indicates if the wetland was composed partially of hollows (low, soft, unvegetated areas) in the AA | false true view top 100 |
| HAB1/2:Bear cap % hollows | hab1_2_bear_cap_hollows_1 | number | Estimated percent of the AA that is composed of hollows (when hollows are present) | 20 40 37 25 30 view top 100 |
| HAB1/2:Bear cap rating | hab1_2_bear_cap_rating | number | Metric rating based on average measure of soil resistance (cm) | 9 6 3 12 view top 100 |
| HAB2: Horizontal veg obs avg. 4 subplot totals | hab2_horizontal_veg_obs_avg | number | Average number of blocks visible on vegetation board at sub-plots | 0.00 20.00 15.00 0.25 12.50 view top 100 |
| HAB2: Horizontal veg obs % obs | hab2_horizontal_veg_obs_obs | text | Visual horizontal obstruction by vegetation at 0.25 to 1.25m heights measured in 0.25m intervals with a cover board | 62.0 60.6 89.0 74.5 93.5 view top 100 |
| HAB2: Horizontal veg obs rating | hab2_horizontal_veg_obs_rating | number | Metric rating based on calculations of visual horizontal obstruction by vegetation on a vegetation board at various heights. | 12 6 9 3 view top 100 |
| HAB3: Plant fragments rating | hab3_plant_fragments_rating | number | Metric rating based on the volume of plant fragments in the upper soil horizon | 3 6 12 9 4 view top 100 |
| HAB3/5: # plant layers | hab3_5_plant_layers | number | A count of the number of plant layers in the AA | 3 2 4 1 0 view top 100 |
| HAB3/5: # plant layers rating | hab3_5_plant_layers_rating | number | Metric rating based on the count of plant layers in the AA | 9 12 6 3 view top 100 |
| HAB4: Vertical biotic structure rating | hab4_vertical_biotic_structure | number | Metric rating based on the interspersion and complexity of the vegetation community | 12 9 6 3 view top 100 |
| HAB4/6: % invasive co-dominant species | hab4_6_invasive_co_dominant | number | Percent of co-dominant non-native, invasive species in the AA | 0 25 33 50 20 view top 100 |
| HAB4/6: % invasive co-dominant species rating | hab4_6_invasive_co_dominant_1 | number | Metric rating based on the percent of co-dominant non-native, invasive species in the AA | 12 9 3 6 view top 100 |
| HAB4: Species richness count | hab4_species_richness_count | text | Count of different plant species found in the AA | 1 3 4 11 5 view top 100 |
| HAB4: Species richness rating | hab4_species_richness_rating | text | Metric rating based on the count of different plant species found in the AA | 12 6 9 3 view top 100 |
| HAB5/7: % invasive | hab5_7_invasive | text | Percent cover of invasive plant species in the AA | 0 1 20 2 3 view top 100 |
| HAB5/7: % invasive rating | hab5_7_invasive_rating | number | Metric rating based on the percent cover of invasive plant species in the AA | 9 12 3 6 view top 100 |
| Buffer attribute score | buffer_attribute_score | number | Overall score of all buffer attributes combined based on protocol formula | 93.33 86.67 80.00 91.70 53.33 view top 100 |
| Hydro attribute score | hydro_attribute_score | number | Overall score of all hydrology attributes combined based on protocol formula | 100.00 75.00 91.67 83.33 87.50 view top 100 |
| Habitat attribute score | habitat_attribute_score | number | Overall score of all habitat attributes combined based on protocol formula | 66.67 73.33 60.00 75.00 71.40 view top 100 |
| QDR | qdr | number | Qualitative Disturbance Rating | 3 2 4 5 6 view top 100 |
| Final score | final_score | number | The final score of a wetland site on a scale of 0 to 100 | 86.67 84.44 77.78 82.22 73.30 view top 100 |
| Condition category | condition_category | text | Condition category that the wetland falls within (minimally, moderately, or severely stressed) based on final score | moderately stressed Moderately Stressed Minimally Stressed minimally stressed severely stressed view top 100 |