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opencc-by-4.0Apr 2024View details →

Meteorological Data for key mountain ecosystems in Kenya

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Fig. 6 in SPECIFIC AND TROPHIC DIVERSITY OF SOIL NEMATODES IN FOREST ECOSYSTEMS FROM THE ZARAND MOUNTAINS

Fig. 6. - Relative abundance of the nematode FEeding groups in podzolic brown soil of the dmmast oak FOrest FRom BIIrzava (b).

Fig. 5 in SPECIFIC AND TROPHIC DIVERSITY OF SOIL NEMATODES IN FOREST ECOSYSTEMS FROM THE ZARAND MOUNTAINS

Fig. 5. - Relative abundance of the nematode feeding groups in brown earth soil of the durmast oak forest from Corbe�ti.

Fig. 4 in SPECIFIC AND TROPHIC DIVERSITY OF SOIL NEMATODES IN FOREST ECOSYSTEMS FROM THE ZARAND MOUNTAINS

Fig. 4. - Relative abundance of the nematode feeding groups in brown earth soil of the hoRNbeam-beech FOrest from Cladova (b).

Fig. 2 in SPECIFIC AND TROPHIC DIVERSITY OF SOIL NEMATODES IN FOREST ECOSYSTEMS FROM THE ZARAND MOUNTAINS

Fig. 2. - Relative abundance of the nematode FEeding groups in brown acid soil of the beech forest fRom Miidrige�ti a.

Fig. 3 in SPECIFIC AND TROPHIC DIVERSITY OF SOIL NEMATODES IN FOREST ECOSYSTEMS FROM THE ZARAND MOUNTAINS

Fig. 3. - Relative abundance of the nematode feeding groups in brown acid soil of the hornbeambeech forest from Miidrige�ti (b).

Fig. 1 in SPECIFIC AND TROPHIC DIVERSITY OF SOIL NEMATODES IN FOREST ECOSYSTEMS FROM THE ZARAND MOUNTAINS

Fig. 1. - Dendrogram of cluster analysis FOR nematode communities, based on specific affinity, in the deciduous FOrests from the ZaRand Mountains.

Figure 5 in Composition and structure of plant communities in the Moist Temperate Forest Ecosystem of the Hindukush Mountains, Pakistan

Figure 5. CCA plot Analysis of illustrating the influence of elevation on spreading pattern of plant communities in Lalkoo valley Swat.

Figure 4 in Composition and structure of plant communities in the Moist Temperate Forest Ecosystem of the Hindukush Mountains, Pakistan

Figure 4. Results of CCA joint biplot showing results for eleven plant communities' correlation with environmental variable. BAB-I: Berberis- Abies- Bergenia; PIP-II: Picea-Indigofera- Poa; APP-III: Abies- Parrotiopsis- Poa,QVP-IV:Quercus-Viburnum-Poa,PSP-V:PiceaSalix-Primula,AVP-VI:Abies-Viburnum -Poa; VTP-VII: ViburnumTaxus-Poa; PVL-VIII: Pinus-Viburnum-Lithospermum; ABC-IX: Abies-Berberis-Carex; PVP-X: Pinus-Viburnum-Poa; and PPP-XI: Parrotiopsis-Picea-Poa represents community types.

opencc-zeroSep 2023View details →

Data archive for: Fire-regime variability and ecosystem resilience over four millennia in a Rocky Mountain subalpine watershed

Wildfires strongly influence forest ecosystem processes, including carbon and nutrient cycling and vegetation dynamics. As fire activity increases under changing climate conditions, the ecological and biogeochemical resilience of many forest ecosystems remains unknown. To investigate the resilience of forest ecosystems to changing climate and wildfire activity over decades to millennia, we developed a 4800-yr high-resolution lake-sediment record from Silver Lake, Montana, USA (47.360° N, 115.566° W). Charcoal particles, pollen grains, element concentrations, and stable isotopes of C and N serve as proxies of past changes in fire, vegetation, and ecosystem processes such as nitrogen cycling and soil erosion, within a small subalpine forest watershed. A published lake-level history from Silver Lake provides a local record of paleohydrology. A trend toward increased effective moisture over the late Holocene coincided with a distinct shift in the pollen assemblage c. 1900 yr BP, resulting from increased subalpine conifer abundance. Fire activity, inferred from peaks in macroscopic charcoal, decreased significantly after 1900 yr BP, from one fire event every 126 yr (83–184 yr, 95% CI) from 4800–1900 yr BP, to one event every 223 yr (175–280 yr) from 1900 yr BP to present. Across the record, individual fire events were followed by two distinct decadal-scale biogeochemical responses, reflecting differences in ecosystem impacts of fires on watershed processes. These distinct biogeochemical responses were interpreted as reflecting fire severity, highlighting (i) erosion, likely from large or high-severity fires, and (ii) nutrient transfers and enhanced within-lake productivity, likely from lower-severity or patchier fires. Biogeochemical and vegetation proxies returned to pre-fire values within decades regardless of the nature of fire effects. Paleo records of fire and ecosystem responses provide a novel view revealing past variability in fire effects, analogous to spatial variability in fire severity observed within contemporary wildfires. Overall, the paleo record highlights ecosystem resilience to fire across long-term variability in climate and fire activity. Higher fire frequencies in past millennia relative to the 20th and 21st centuries suggest that northern Rocky Mountain subalpine ecosystems could remain resilient to future increases in fire activity, provided continued ecosystem recovery within decades.

publicDec 2024View details →

A beneficial arthropod dataset for agricultural landscapes in Western Canada and adjacent mountain ecosystems

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publicSep 2023View details →

Data archive for: Fire-regime variability and ecosystem resilience over four millennia in a Rocky Mountain subalpine watershed

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publicMar 2024View details →

Data for: Climate change is poised to alter mountain stream ecosystem processes via organismal phenological shifts

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dryad36/100

Citizen science data reveals altitudinal movement and seasonal ecosystem use by hummingbirds in the Andes Mountains

Ensuring connectivity is crucial to protect landscapes but it requires knowledge about how animals use ecosystems throughout the year. However, animal movements remain largely unknown in biodiversity hotspots, even for species that fulfill key ecological roles, as is the case of hummingbirds in the Andes. In the complex topography of mountain slopes, movement of these avian pollinators may occur either between habitat patches with asynchronous plant blooms or across ecosystems that are located within same elevation bands or along altitudinal gradients. Here, we used two decades (2000-2020) of records from citizen science data and boosted regression trees to predict monthly distributions for 55 hummingbird species in the Andes. We identified shifts in altitudinal distribution between contiguous months and calculated changes in the proportion of predicted distributions occupied by ecosystem types. Our findings reveal substantial altitudinal movement and differences in the proportion of ecosystem types utilized throughout the year that had not been previously reported for several species. Yet the magnitude of altitudinal and ecosystem shifts varies between hummingbird clades, and in some cases changes in the proportion of ecosystem types within estimated distributions occurs with little variation in altitude. All ecosystems across the Andes show temporal changes in hummingbird occurrence, but these are higher in natural landscapes compared to croplands or urban areas. Finally, we used phylogenetic logistic regression to test whether altitudinal and ecosystem shifts affect population trends. We found that higher ecosystem seasonality is more strongly associated with decreasing populations in comparison to altitudinal shifts. Altogether, our study reveals complex patterns of movement in hummingbirds and highlights the importance of ecological connectivity across different ecosystem types. More generally, it demonstrates the opportunity of using citizen science data to increase understanding about species' seasonal occurrences so that landscapes can be better managed to protect animal movement.

opencc-zeroOct 2023View details →

opencc-by-4.0Feb 2024View details →

Data - Scavenging in two mountain ecosystems: distinctive contribution of ants in grassland and non-ant invertebrates in forest

Data set and analyse used in the manuscript title "Scavenging in two mountain ecosystems: distinctive contribution of ants in grassland and non-ant invertebrates in forest". In this study we quantify the relative contribution of ants, non-ant invertebrates and vertebrates in scavenging nitrogen-rich (insect carcasses) and carbon-rich (seeds) baits in two contrasting mountainous habitats in Brazil (grasslands and forests). Testing the folowing predictions  (1) baits are more likely to be removed from the forest floor than grassland due to higher plant biomass in forest than in savannas (Miranda et al. 2014), which could indicate a higher animal biomass in the forest. However, (2) ants would have higher relative importance in scavenging in open habitats (grasslands) than in closed (forests) because in open habitats, ants have higher activity (Bucy and Breed 2006), richness (Castro et al. 2020), and there are more dominant species (Andersen 2019). (3) The role of ants in scavenging is not compensated for by other taxa when ants are absent. Finally, (4) the removal rates of animal-based baits on the ground are higher than seed baits in both environments, since animal resources are more limiting than plant resource in most habitats (Kaspari and Yanoviak 2001, Bar-On et al. 2018).

Figure 2. Species area curve obtained from 264 in Composition and structure of plant communities in the Moist Temperate Forest Ecosystem of the Hindukush Mountains, Pakistan

Figure 2. Species area curve obtained from 264 plant species in Lalkoo valley.

Figure 3. Cluster Dendrogram indicating 11 in Composition and structure of plant communities in the Moist Temperate Forest Ecosystem of the Hindukush Mountains, Pakistan

Figure 3. Cluster Dendrogram indicating 11 plant association types in the Lalkoo Valley.

Figure 1 in Composition and structure of plant communities in the Moist Temperate Forest Ecosystem of the Hindukush Mountains, Pakistan

Figure 1. Samping sites in Lalkoo valley.