Effects of the hydroperiod on the vegetative and community structure of freshwater forested wetlands, Chile

Correa‐Araneda, Francisco; Urrutia, Jonathan; Soto-Mora, Yenny; Figueroa, Ricardo; Hauenstein, Enrique

doi:10.1080/02705060.2012.668719

Cited by 27 publications

(17 citation statements)

References 41 publications

(34 reference statements)

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“…Onset Computer Corp., Bourne, MA USA = $300-$600 US; Remote Data Systems, Inc., Navassa, NC USA = $750-1500.00). These devices are capable of monitoring a variety of depths ranging from 0-80 m and have been successfully used to monitor ponds and other waterways (Korfel et al 2010;Correa-Araneda et al 2012). Although effective, monitoring a large number of wetlands may not be feasible either due to the expense of automated water level sensors or time needed to check multiple staff gages at regular intervals.…”

Section: Introductionmentioning

confidence: 99%

Automated analysis of temperature variance to determine inundation state of wetlands

Anderson

Heemeyer

Peterman

et al. 2015

Wetlands Ecol Manage

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Monitoring the inundation state (wet or dry) of wetlands is critical to understanding aquatic community structure but can be costly and laborintensive. We tested the ability of temperature data from cost-effective iButton data loggers to reflect the inundation state of wetlands in central Missouri, based on our hypothesis that dry ponds would show greater daily temperature variance than ponds that remained inundated with water. We evaluated this method with two experiments in large outdoor mesocosms, and in existing natural wetlands in which we had deployed iButtons. True inundation state from pond visits was compared to predicted inundation state over different temperature variance thresholds expected to delineate wet or dry ponds. We confirmed that the daily temperature variances of dry iButtons were higher than that of iButtons under water, as expected, but that variance was influenced by factors such as canopy cover. We also describe an automated procedure that can be used to determine whether a pond was wet or dry with greater than 80 % accuracy. Using this approach, changes in inundation state, the number of days wet and dry, and the number of drying and filling events can be calculated. Several caveats are also provided that should be considered prior to using this method to maximize the accuracy in assessing inundation state.

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Section: Introductionmentioning

confidence: 99%

Automated analysis of temperature variance to determine inundation state of wetlands

Anderson

Heemeyer

Peterman

et al. 2015

Wetlands Ecol Manage

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“…Hydrologic regime is a major determinant of plant community development and patterns of vegetation zonation in wetlands (Seabloom et al 1998;Casanova and Brock 2000;Correa-Araneda et al 2012). In general, hydrology exerts strong effects on both soilatmosphere gas exchange and soil redox dynamics (Pezeshki 2001;Niedermeier and Robinson 2007), and consequently, leaf stomatal conductance, photosynthesis (Pezeshki et al 1998;Li et al 2004), and plant biomass production (Kennedy et al 2003;Li et al 2004;Garcia-Serrano et al 2007;Jung et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Effects of hydrology and competition on plant growth in a freshwater marsh of northeast China

Zhang

Mao

Gong

et al. 2013

Journal of Freshwater Ecology

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Hydrology and competition are major determinants of plant zonation patterns in wetlands. We conducted a pot experiment to investigate effects of water levels on plant growth of two dominant species from the Sanjiang Plain (Deyeuxia angustifolia and Carex lasiocarpa) in monoculture and mixtures (i.e., 2:1, 1:1, and 1:2 mixtures of C. lasiocarpa and D. angustifolia). Water level had significant effects on the biomass of both species (p < 0.05). The aboveground biomass of C. lasiocarpa increased with decreasing water level in both monoculture and mixtures and the same was true for belowground biomass in monoculture. Waterlogging (10 cm water level) and natural drought reduced the aboveground and belowground biomass of D. angustifolia in monoculture and waterlogging (20 and 10 cm water levels) also reduced the aboveground biomass in mixtures. The relative yield of C. lasiocarpa was greater than 1.0 in the 1:1 mixture (t ¼ 3.49) and the 1:2 mixture (t ¼ 6.63) at 20 cm water level (i.e., the performance of individuals was better in mixtures than that in the monoculture), and the same was true for D. angustifolia in the 2:1 mixture (t ¼ 10.23) and the 1:1 mixture (t ¼ 4.12) at À10 cm water level. The relative yield of C. lasiocarpa increased with increasing water level in the 1:1 and 1:2 mixtures but decreased for D. angustifolia in the 2:1 mixture. Moreover, the species with smaller initial proportion usually had higher relative yield in mixtures. This would tend to promote the coexistence of these two species. Our results suggest that hydrologic regime change has the potential to produce marked influences on plant productivity and ecosystem carbon budget in the Sanjiang Plain. Moreover, competition is an additional important determinant of plant distribution and community structure in this area.

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“…& Arn.) Nied and Myrceugenia exsucca (DC) Berg (Correa-Araneda et al 2012). However, in the last four decades they have been replaced by exotic species, mainly Pinus radiata (D. Don) and Eucalyptus globulus (Labill), which have been steadily increased in the Chilean Mediterranean Zone (ChMZ) (Shulz et al 2010(Shulz et al , 2011CONAF 2011).…”

Section: Introductionmentioning

confidence: 99%

Leaf litter decomposition from native and non-native species in a freshwater forested wetland of Chile

Gómez-Capponi

Correa‐Araneda²,

Díaz³

et al. 2017

Gayana (Concepc.)

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Decomposition of leaf litter is a fundamental process for the functioning of forested wetlands. The rapid increment of forest plantations has involved a greater contribution of leaf litter of exotic origin to these ecosystems. The decomposition rate between leaf litter of native and exotic origin in a forested wetland of the Mediterranean zone of Chile was compared, as well as the contribution of bacteria and macroinvertebrate to this process. It was determined that the decomposition rate of the leaf litter presented signifi cant differences (p < 0.05) between species, being faster in those of non-native origin. This could be due to differences in ecophysiological aspects of the leaves like the presence of chemical compounds such as waxes or oils. Both analyzed communities were relevant in the studied process. However, bacteria contributed mostly to the decomposition of both types of leaves. The implications of the physical and chemical characteristics of the leaves and the water on the processing of the foliar material are discussed. KEYWORDS:Allochthonous detritus, bacteria, lentic ecosystem, macroinvertebrates. RESUMENEn los humedales boscosos, la descomposición de la hojarasca es un proceso fundamental para su funcionamiento. El rápido incremento de las plantaciones forestales ha implicado un mayor aporte de hojarasca de origen exótico a estos ecosistemas. Se comparó la tasa de descomposición entre hojarasca de origen nativo y exótico en un humedal boscoso de la zona Mediterránea de Chile, así como la contribución de las bacterias y macroinvertebrados a este proceso. Se determinó que la tasa de descomposición de la hojarasca presentó diferencias signifi cativas entre las diferentes especies (p < 0,05), siendo más rápido en especies de origen exótico. Esto podría ser dado por diferencias en algunos aspectos ecofi siológicos de las hojas como la presencia de compuestos químicos tales como ceras o aceites. Ambas comunidades analizadas fueron relevantes en el proceso estudiado. Sin embargo, las bacterias contribuyeron mayormente a la descomposición de ambos tipos de hojas. Se discuten las implicaciones de las características físicas y químicas de las hojas y el agua en el procesamiento del material foliar.

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Effects of the hydroperiod on the vegetative and community structure of freshwater forested wetlands, Chile

Cited by 27 publications

References 41 publications

Automated analysis of temperature variance to determine inundation state of wetlands

Automated analysis of temperature variance to determine inundation state of wetlands

Effects of hydrology and competition on plant growth in a freshwater marsh of northeast China

Leaf litter decomposition from native and non-native species in a freshwater forested wetland of Chile

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