Responses of plant populations and communities to environmental changes of the late Quaternary

Jackson, Stephen T.; Overpeck, Jonathan T.

doi:10.1666/0094-8373(2000)26[194:roppac]2.0.co;2

Cited by 540 publications

(482 citation statements)

References 133 publications

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“…In temperate regions the concept of Pleistocene noanalog communities (Davis, 1981, Webb, 1987 and no analog climates (Jackson and Overpeck, 2000) has replaced the more static view of closely co-evolved communities. In the tropics, there have been few opportunities to test whether Pleistocene communities were similarly without modem parallel.…”

Section: Three Forest Recordsmentioning

confidence: 99%

Amazonian paleoecological histories: one hill, three watersheds

Bush

Oliveira

Colinvaux

et al. 2004

Palaeogeography, Palaeoclimatology, Palaeoecology

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Data from the Hill of Six Lakes, in the northwestern Brazilian Amazon region, provide three records of paleoclimatic and vegetation change in lowland Amazonia that span the last 170,000 years. Three lakes, Verde, Pata and Dragäo, which occupy separate watersheds on the hill, provide the most detailed image yet obtained of ice-age conditions in lowland Amazonia. Welldated sedimentary records for fossil palynological, charcoal, cation, and pigment, data are presented.The data indicate the continuous presence of mesic forest throughout the last ice age. Oscillations of lake level are recorded and the lowstands are attributed to reduced precipitation inputs to systems delicately balanced between water loss (leakage through the floor of the basin) and gain (precipitation). Gross stratigraphy, algal remains, and paleochemistry suggest that the stands of high and low lake level were cyclic, apparently correlating precessional orbital variation. Times of lake lowstand coincide with wet season (December-January-February, DJF) insolation minima. The strongest of eight lowstand cycles occurred ca. 35,000 to 27,000 cal BP.Even during lowstand episodes, pollen is well preserved and provides a clear signal of uninterrupted forest cover. The principal lowland elements are continuously present in the record, suggesting the long-term (Quaternary) availability of the lowland forest biome in this region. However, during the late Pleistocene the forest changed in composition with the expansion or invasion of montane floral elements creating communities of the mesic forest biome without modem analogs. While precipitation cycles were causing lake levels to rise and fall, the principal influence on vegetation appears to have been cooling. In the late Pleistocene, the population expansion of montane elements at lower elevations is consistent with a cooling of 4-5 °C.

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Section: Three Forest Recordsmentioning

confidence: 99%

Amazonian paleoecological histories: one hill, three watersheds

Bush

Oliveira

Colinvaux

et al. 2004

Palaeogeography, Palaeoclimatology, Palaeoecology

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“…Stable oxygenisotopic values recorded in sediments from the extratropical North Atlantic also indicate warmer-than-present SSTs during the mid-Holocene (Ruddiman and Mix 1991). Evidence from both terrestrial and coastal regions shows that warming during this interval allowed many organisms to increase their ranges northward (Clarke et al 1967;COHMAP 1988;Delcourt and Delcourt 1991;Pielou 1991;Salvigsen, Forman, and Miller 1992;Dyke, Dale, and McNelly 1996;Strasser 1999;Dahlgren, Weinberg, and Halanych 2000;Jackson and Overpeck 2000). This period of thermal optimum during the Holocene also correlates with the northernmost position and expansion of coral reefs in the Pacific (Taira 1979;Veron 1992).…”

Section: The Latest Pleistocene and Holocene History Of Reef-buildingmentioning

confidence: 99%

Ecological Shifts along the Florida Reef Tract: The Past as a Key to the Future

Precht

Miller

Geological Approaches to Coral Reef Ecology

122

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“…Palaeontological evidence shows that, in the past, combinations of species existed that have no known extant counterparts (Jackson & Overpeck, 2000). These assemblages are called no-analogue communities (Ackerly, 2003;Williams & Jackson, 2007); their existence suggests that future climate change may produce combinations of species not previously experienced.…”

Section: Future (Novel) Communitiesmentioning

confidence: 99%

“…Fundamental niches would ideally be estimates directly via experimental or mechanistic approaches (Porter et al, 2002;Kearney & Porter, 2004), but can be estimated under certain scenarios via ecological niche modelling (Soberón & Peterson, 2005). Once niche estimates are in hand, they are integrated with environmental change scenarios to estimate likely future distributions (Jackson & Overpeck, 2000), which are functions of potential niches (the portion of the fundamental niche actually represented under a given current climate, which obviously may be a much smaller subset of the fundamental niche; Soberón & Nakamura, 2009). Finally, potential niches are projected geographically to obtain potentially suitable regions in the planet, and scenarios of dispersal used to estimate likely future distributional areas.…”

Section: Future (Novel) Communitiesmentioning

confidence: 99%