Geospatial Analysis of Space–Time Patterning of ENSO Forced Daily Precipitation Distributions in the Gulf of Mexico

Munroe, Robert J.; Crawford, T. M.; Curtis, Scott

doi:10.1080/00330124.2013.765291

Cited by 9 publications

(4 citation statements)

References 47 publications

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“…These findings suggest a relatively more straightforward climate influence on microbial activity than on litterfall in tropical forest biomes – ecosystem processes that are poorly documented under seasonal drought. Our results further imply that predicted increases in dry season length and/or intensity (Conde et al ., ; Munroe et al ., ) could potentially increase C sequestration in SDTFs.…”

Section: Discussionmentioning

confidence: 97%

Variations in soil carbon sequestration and their determinants along a precipitation gradient in seasonally dry tropical forest ecosystems

Campo

Merino

2016

Global Change Biology

107

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The effect of precipitation regime on the C cycle of tropical forests is poorly understood, despite the existence of models that suggest a drier climate may substantially alter the source-sink function of these ecosystems. Along a precipitation regime gradient containing 12 mature seasonally dry tropical forests growing under otherwise similar conditions (similar annual temperature, rainfall seasonality, and geological substrate), we analyzed the influence of variation in annual precipitation (1240 to 642 mm) and duration of seasonal drought on soil C. We investigated litterfall, decomposition in the forest floor, and C storage in the mineral soil, and analyzed the dependence of these processes and pools on precipitation. Litterfall decreased slightly - about 10% - from stands with 1240 mm yr(-1) to those with 642 mm yr(-1), while the decomposition decreased by 56%. Reduced precipitation strongly affected C storage and basal respiration in the mineral soil. Higher soil C storage at the drier sites was also related to the higher chemical recalcitrance of litter (fine roots and forest floor) and the presence of charcoal across sites, suggesting an important indirect influence of climate on C sequestration. Basal respiration was controlled by the amount of recalcitrant organic matter in the mineral soil. We conclude that in these forest ecosystems, the long-term consequences of decreased precipitation would be an increase in organic layer and mineral soil C storage, mainly due to lower decomposition and higher chemical recalcitrance of organic matter, resulting from changes in litter composition and, likely also, wildfire patterns. This could turn these seasonally dry tropical forests into significant soil C sinks under the predicted longer drought periods if primary productivity is maintained.

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Section: Discussionmentioning

confidence: 97%

Variations in soil carbon sequestration and their determinants along a precipitation gradient in seasonally dry tropical forest ecosystems

Campo

Merino

2016

Global Change Biology

107

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“…, Misra and DiNapoli , Park and Dusec , Munroe et al. ). The nonsignificant trend for hawksbill growth rates to decrease from north to south in our study region (Fig.…”

Section: Discussionmentioning

confidence: 99%

Somatic growth dynamics of West Atlantic hawksbill sea turtles: a spatio‐temporal perspective

et al. 2016

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Somatic growth dynamics are an integrated response to environmental conditions. Hawksbill sea turtles (Eretmochelys imbricata) are long‐lived, major consumers in coral reef habitats that move over broad geographic areas (hundreds to thousands of kilometers). We evaluated spatio‐temporal effects on hawksbill growth dynamics over a 33‐yr period and 24 study sites throughout the West Atlantic and explored relationships between growth dynamics and climate indices. We compiled the largest ever data set on somatic growth rates for hawksbills – 3541 growth increments from 1980 to 2013. Using generalized additive mixed model analyses, we evaluated 10 covariates, including spatial and temporal variation, that could affect growth rates. Growth rates throughout the region responded similarly over space and time. The lack of a spatial effect or spatio‐temporal interaction and the very strong temporal effect reveal that growth rates in West Atlantic hawksbills are likely driven by region‐wide forces. Between 1997 and 2013, mean growth rates declined significantly and steadily by 18%. Regional climate indices have significant relationships with annual growth rates with 0‐ or 1‐yr lags: positive with the Multivariate El Niño Southern Oscillation Index (correlation = 0.99) and negative with Caribbean sea surface temperature (correlation = −0.85). Declines in growth rates between 1997 and 2013 throughout the West Atlantic most likely resulted from warming waters through indirect negative effects on foraging resources of hawksbills. These climatic influences are complex. With increasing temperatures, trajectories of decline of coral cover and availability in reef habitats of major prey species of hawksbills are not parallel. Knowledge of how choice of foraging habitats, prey selection, and prey abundance are affected by warming water temperatures is needed to understand how climate change will affect productivity of consumers that live in association with coral reefs.

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“…Gulf Coast and northern Mexico, especially in southwestern Texas and adjacent northern Mexico (Hurrell, 1996;Torbenson et al, 2019). EL Niño events have also been found to be generally associated with positive precipitation anomalies throughout the same area (Ropelewski and Halpert, 1986;Ropelewski and Halpert, 1987;Wise et al, 2015;Torbenson et al, 2019), but with significant clustering of precipitation "hotspots" over the Gulf of Mexico (Munroe et al, 2014). Summertime El Niño conditions also increase precipitation in the subsequent winter with La Niña summers suppressing the upcoming winter's precipitation in much of the SCUSA (Kurtzman and Scanlon, 2007).…”

Section: Impacts Of Enso In the South-central United Statesmentioning

confidence: 97%

“…Summertime El Niño conditions also increase precipitation in the subsequent winter with La Niña summers suppressing the upcoming winter's precipitation in much of the SCUSA (Kurtzman and Scanlon, 2007). The La Niña phase is linked less conclusively to temperature and precipitation in the same area, but with tendencies for negative cold-season precipitation anomalies Halpert, 1989, 1996;Munroe et al, 2014).…”

Section: Impacts Of Enso In the South-central United Statesmentioning

confidence: 99%

Impacts of ocean-atmosphere teleconnection patterns on the south-central United States

et al. 2022

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Recent research has linked the climate variability associated with ocean-atmosphere teleconnections to impacts rippling throughout environmental, economic, and social systems. This research reviews recent literature through 2021 in which we identify linkages among the major modes of climate variability, in the form of ocean-atmosphere teleconnections, and the impacts to temperature and precipitation of the South-Central United States (SCUSA), consisting of Arkansas, Louisiana, New Mexico, Oklahoma, and Texas. The SCUSA is an important areal focus for this analysis because it straddles the ecotone between humid and arid climates in the United States and has a growing population, diverse ecosystems, robust agricultural and other economic sectors including the potential for substantial wind and solar energy generation. Whereas a need exists to understand atmospheric variability due to the cascading impacts through ecological and social systems, our understanding is complicated by the positioning of the SCUSA between subtropical and extratropical circulation features and the influence of the Pacific and Atlantic Oceans, and the adjacent Gulf of Mexico. The Southern Oscillation (SO), Pacific-North American (PNA) pattern, North Atlantic Oscillation (NAO) and the related Arctic Oscillation (AO), Atlantic Multidecadal Oscillation/Atlantic Multidecadal Variability (AMO/AMV), and Pacific Decadal Oscillation/Pacific Decadal Variability (PDO/PDV) have been shown to be important modulators of temperature and precipitation variables at the monthly, seasonal, and interannual scales, and the intraseasonal Madden-Julian Oscillation (MJO) in the SCUSA. By reviewing these teleconnection impacts in the region alongside updated seasonal correlation maps, this research provides more accessible and comparable results for interdisciplinary use on climate impacts beyond the atmospheric-environmental sciences.

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Geospatial Analysis of Space–Time Patterning of ENSO Forced Daily Precipitation Distributions in the Gulf of Mexico

Cited by 9 publications

References 47 publications

Variations in soil carbon sequestration and their determinants along a precipitation gradient in seasonally dry tropical forest ecosystems

Variations in soil carbon sequestration and their determinants along a precipitation gradient in seasonally dry tropical forest ecosystems

Somatic growth dynamics of West Atlantic hawksbill sea turtles: a spatio‐temporal perspective

Impacts of ocean-atmosphere teleconnection patterns on the south-central United States

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