Abrupt Tropical Vegetation Response to Rapid Climate Changes

Hughen, Konrad A; Eglinton, T. I.; Xu, Li; Makou, Matthew

doi:10.1126/science.1092995

Cited by 250 publications

(161 citation statements)

References 34 publications

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“…Drier conditions are also reported in the Bolivian cordillera (van't Veer et al, 2000) A reduction of 60 % of the Amazon discharge, as compared to the modern flow, is noticed from the Amazon fan sediments (Figure 5h, Maslin and Burns, 2000) and reduced precipitations in northern Amazonia (Peterson et al, 2000) accompanied by the development of a dry savanna are inferred from the Cariaco Trench (Haug et al, 2001;Hughen et al, 2004). Oppositely, the YD has been interpreted as more 2000).…”

Section: Regional Integration Within South American Recordsmentioning

confidence: 79%

Paleohydrological changes during the last deglaciation in Northern Brazil

Jacob

Huang

Disnar

et al. 2007

Quaternary Science Reviews

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We here report a reconstruction of hydrological balance variations in Northern Brazil for the last 20 ka deduced from the δD values of aquatic and land plant molecules extracted from the sediment infill of Lake Caçó. Our reconstructed precipitation, lake water isotope ratio and evaporation-evapotranspiration isotope effect allow us to obtain an estimate of moisture balance, and, to a lesser extent, precipitation amount and seasonality changes.

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Section: Regional Integration Within South American Recordsmentioning

confidence: 79%

Paleohydrological changes during the last deglaciation in Northern Brazil

Jacob

Huang

Disnar

et al. 2007

Quaternary Science Reviews

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“…Over long periods, climate change can cause important changes in the geographic distribution and abundance of major land cover types and animal habitats (Melillo, 1999;Parmesan and Yohe, 2003;Thomas et al, 2004). Hughen et al (2004), for example, found a rapid shift between arid grassland and wet forest in the Cariaco region during deglacial high latitude North Atlantic climate oscillations. Meta-analysis conducted by Root et al (2003Root et al ( , 2005 has also revealed a discernible trend in the population of both animals and plants as a consequence of climate warming over the past century.…”

Section: Introductionmentioning

confidence: 99%

Climate Change detection over different land surface vegetation classes

Dang

Gillett

Weaver

et al. 2006

Intl Journal of Climatology

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Abstract:A global land cover classification data set is used to divide the globe into seven regions to study surface temperature changes over different vegetation/surface classes. Statistically significant warming is found from the year 1900 over all regions (except for the ice sheets over Greenland and Antarctica). Outputs from three coupled climate models (CGCM2, HadCM2 and the Parallel Climate Model (PCM)) are used to examine the detection and attribution of surface temperature trends over the various vegetation classes for the past half century. An anthropogenic warming trend is detected in six of the seven regions. Observed trends are consistent with those simulated in response to greenhouse gas and sulfate aerosol forcing except over tropical forest and water where the models appear to overestimate the warming. The similarity between the resultant scaling factors for each region from the different models underscores the reliability of our detection results.

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“…While the static vegetation layer used in the analysis may seem arbitrarily conservative, it is not an overly pessimistic assumption. First, vegetation lags to past and ongoing climate shifts have been shown in literature to be in the order of decades (Hughen, Eglinton, Xu, & Makou, 2004; Kitayama, Mueller‐Dombois, & Vitousek, 1995; Wu et al., 2015). Second, mature, structurally complex native forests at high elevations likely take decades to develop given the very slow growth of its dominant species, ‘ohi’a (Atkinson, 1970; Drake & Mueller‐Dombois, 1993).…”

Section: Discussionmentioning

confidence: 99%

Assessing the potential of translocating vulnerable forest birds by searching for novel and enduring climatic ranges

Fortini

Kaiser

Vorsino

et al. 2017

Ecology and Evolution

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Hawaiian forest birds are imperiled, with fewer than half the original >40 species remaining extant. Recent studies document ongoing rapid population decline and project complete climate‐based range losses for the critically endangered Kaua'i endemics ‘akeke’e (Loxops caeruleirostris) and ‘akikiki (Oreomystis bairdi) by end‐of‐century due to projected warming. Climate change facilitates the upward expansion of avian malaria into native high elevation forests where disease was historically absent. While intensified conservation efforts attempt to safeguard these species and their habitats, the magnitude of potential loss and the urgency of this situation require all conservation options to be seriously considered. One option for Kaua’i endemics is translocation to islands with higher elevation habitats. We explored the feasibility of interisland translocation by projecting baseline and future climate‐based ranges of ‘akeke’e and ‘akikiki across the Hawaiian archipelago. For islands where compatible climates for these species were projected to endure through end‐of‐century, an additional climatic niche overlap analysis compares the spatial overlap between Kaua’i endemics and current native species on prospective destination islands. Suitable climate‐based ranges exist on Maui and Hawai'i for these Kaua'i endemics that offer climatically distinct areas compared to niche distributions of destination island endemics. While we recognize that any decision to translocate birds will include assessing numerous additional social, political, and biological factors, our focus on locations of enduring and ecologically compatible climate‐based ranges represents the first step to evaluate this potential conservation option. Our approach considering baseline and future distributions of species with climatic niche overlap metrics to identify undesirable range overlap provides a method that can be utilized for other climate‐vulnerable species with disjointed compatible environments beyond their native range.

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Abrupt Tropical Vegetation Response to Rapid Climate Changes

Cited by 250 publications

References 34 publications

Paleohydrological changes during the last deglaciation in Northern Brazil

Paleohydrological changes during the last deglaciation in Northern Brazil

Climate Change detection over different land surface vegetation classes

Assessing the potential of translocating vulnerable forest birds by searching for novel and enduring climatic ranges

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