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@prefix dcterms: <> .
@prefix xsd: <> .
@prefix gcis: <> .
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@prefix biro: <> .

   dcterms:identifier "key-message-15-5";
   gcis:findingNumber "15.5"^^xsd:string;
   gcis:findingStatement "Research and modeling needs are greatest for understanding responses to accelerated sea level rise; mapping tidal wetland and estuarine extent; and quantifying carbon dioxide and methane exchange with the atmosphere, especially in large, undersampled, and rapidly changing regions (<em>high confidence, likely</em>)."^^xsd:string;
   gcis:isFindingOf <>;
   gcis:isFindingOf <>;

## Properties of the finding:
   gcis:descriptionOfEvidenceBase "Tidal wetland and estuarine area are first-order drivers of the spatially integrated flux (e.g., in units of Tg C per year) of all carbon fluxes in these ecosystems. The lack of an accurate quantification of tidal wetland and estuarine area, particularly in Canada and Mexico, is thus a major gap in understanding the role of tidal wetlands and estuaries in the carbon cycling of North America. Carbon cycle research is largely motivated by the impact of greenhouse gases on climate and how climate change affects fluxes of these gases to the atmosphere from terrestrial and aquatic systems. However, the database of tidal wetland and estuarine CO<sub>2</sub> and CH<sub>4</sub> exchanges with the atmosphere is severely limited. In particular, direct estimates of these fluxes are rare. Furthermore, some of the most poorly sampled regions are those that are changing the most rapidly (e.g., the Arctic)."^^xsd:string;
   gcis:assessmentOfConfidenceBasedOnEvidence "Confidence is high in Key Finding 5 because systematic studies (with error estimates) of tidal wetlands and estuaries are extremely limited. Very few direct estimates of exchanges of atmospheric CO<sub>2</sub> and CH<sub>4</sub> with tidal wetlands and estuaries exist. While research needs are present in other aspects of the tidal wetland and estuarine carbon cycling, these needs are unlikely to be more pressing than the needs for quantifying area and gas exchange with the atmosphere."^^xsd:string;
   gcis:newInformationAndRemainingUncertainties "There are few uncertainties in Key Finding 5 because there is a clear lack of data on extent and atmospheric exchange."^^xsd:string;

   a gcis:Finding .

## This finding cites the following entities:

   prov:wasDerivedFrom <>.