Matches in SemOpenAlex for { <https://semopenalex.org/work/W1576176496> ?p ?o ?g. }
- W1576176496 endingPage "44" @default.
- W1576176496 startingPage "29" @default.
- W1576176496 abstract "Summary This review uses proxies of past temperature and atmospheric CO 2 composition based on fossil leaves to illustrate the uncertainties in biologically based proxies of past environments. Most leaf‐based proxies are geographically local or genetically restricted and therefore can be confounded by evolution, extinction, changes in local environment or immigration of species. Stomatal frequency proxies illustrate how genetically restricted proxies can be particularly vulnerable to evolutionary change. High predictive power in the modern world resulting from the use of a very narrow calibration cannot be confidently extrapolated into the past (the Ginkgo paradox). Many foliar physiognomic proxies of climate are geographically local and use traits that are more or less fixed for individual species. Such proxies can therefore be confounded by floristic turnover and biome shifts in the region of calibration. Uncertainty in proxies tends to be greater for more ancient fossils. I present a set of questions that should be considered before using a proxy. Good proxies should be relatively protected from environmental and genetic change, particularly through having high information content and being founded on biomechanical or biochemical principles. Some current and potential developments are discussed, including those that involve more mechanistically sound proxies and better use of multivariate approaches. Contents Summary 29 I. Introduction 30 II. Key concepts in the uncertainty of proxy evidence 30 III. Uncertainties in major foliar physiognomic proxies of MAT 31 IV. Stomatal density and stomatal index 34 V. Steps forward 38 VI. Synthesis 40 Acknowledgements 40 References 40" @default.
- W1576176496 created "2016-06-24" @default.
- W1576176496 creator A5087596951 @default.
- W1576176496 date "2011-07-19" @default.
- W1576176496 modified "2023-10-07" @default.
- W1576176496 title "A critical framework for the assessment of biological palaeoproxies: predicting past climate and levels of atmospheric CO <sub>2</sub> from fossil leaves" @default.
- W1576176496 cites W130056102 @default.
- W1576176496 cites W1496808736 @default.
- W1576176496 cites W1540451666 @default.
- W1576176496 cites W1562852132 @default.
- W1576176496 cites W1681288406 @default.
- W1576176496 cites W1809257248 @default.
- W1576176496 cites W1832596758 @default.
- W1576176496 cites W1874307841 @default.
- W1576176496 cites W1889413073 @default.
- W1576176496 cites W1915489462 @default.
- W1576176496 cites W1928185551 @default.
- W1576176496 cites W1964350279 @default.
- W1576176496 cites W1967976007 @default.
- W1576176496 cites W1971039888 @default.
- W1576176496 cites W1972330717 @default.
- W1576176496 cites W1972594532 @default.
- W1576176496 cites W1975470270 @default.
- W1576176496 cites W1978380064 @default.
- W1576176496 cites W1985808132 @default.
- W1576176496 cites W1987936728 @default.
- W1576176496 cites W1992162534 @default.
- W1576176496 cites W1993566805 @default.
- W1576176496 cites W1994013729 @default.
- W1576176496 cites W1995249788 @default.
- W1576176496 cites W1997923950 @default.
- W1576176496 cites W1999809323 @default.
- W1576176496 cites W2000366550 @default.
- W1576176496 cites W2001007196 @default.
- W1576176496 cites W2002619557 @default.
- W1576176496 cites W2004719390 @default.
- W1576176496 cites W2006486492 @default.
- W1576176496 cites W2009042255 @default.
- W1576176496 cites W2015390801 @default.
- W1576176496 cites W2016188183 @default.
- W1576176496 cites W2016869386 @default.
- W1576176496 cites W2019194472 @default.
- W1576176496 cites W2020191450 @default.
- W1576176496 cites W2020305195 @default.
- W1576176496 cites W2023225491 @default.
- W1576176496 cites W2023691379 @default.
- W1576176496 cites W2028683675 @default.
- W1576176496 cites W2030889658 @default.
- W1576176496 cites W2041840411 @default.
- W1576176496 cites W2043089665 @default.
- W1576176496 cites W2045843168 @default.
- W1576176496 cites W2045908070 @default.
- W1576176496 cites W2047144842 @default.
- W1576176496 cites W2048286841 @default.
- W1576176496 cites W2049652180 @default.
- W1576176496 cites W2050309797 @default.
- W1576176496 cites W2055634426 @default.
- W1576176496 cites W2056542719 @default.
- W1576176496 cites W2064761379 @default.
- W1576176496 cites W2067487893 @default.
- W1576176496 cites W2069112389 @default.
- W1576176496 cites W2072930651 @default.
- W1576176496 cites W2072983179 @default.
- W1576176496 cites W2076198894 @default.
- W1576176496 cites W2076276417 @default.
- W1576176496 cites W2080219987 @default.
- W1576176496 cites W2084579279 @default.
- W1576176496 cites W2086719193 @default.
- W1576176496 cites W2086935100 @default.
- W1576176496 cites W2087372048 @default.
- W1576176496 cites W2089063898 @default.
- W1576176496 cites W2089728012 @default.
- W1576176496 cites W2091003483 @default.
- W1576176496 cites W2091231358 @default.
- W1576176496 cites W2091732975 @default.
- W1576176496 cites W2092206858 @default.
- W1576176496 cites W2092372093 @default.
- W1576176496 cites W2094154579 @default.
- W1576176496 cites W2094793941 @default.
- W1576176496 cites W2096338275 @default.
- W1576176496 cites W2096838887 @default.
- W1576176496 cites W2099074998 @default.
- W1576176496 cites W2099719991 @default.
- W1576176496 cites W2100105646 @default.
- W1576176496 cites W2102185727 @default.
- W1576176496 cites W2107479732 @default.
- W1576176496 cites W2112650832 @default.
- W1576176496 cites W2113063891 @default.
- W1576176496 cites W2113248903 @default.
- W1576176496 cites W2115401832 @default.
- W1576176496 cites W2116340358 @default.
- W1576176496 cites W2116411802 @default.
- W1576176496 cites W2116868398 @default.
- W1576176496 cites W2117236901 @default.
- W1576176496 cites W2117558492 @default.
- W1576176496 cites W2119610202 @default.
- W1576176496 cites W2120463376 @default.
- W1576176496 cites W2120863043 @default.