A proposed strategy for maintaining mature forest habitat in Tasmania's wood production forests

Koch, Amelia J.; Munks, Sarah

doi:10.1111/emr.12337

Cited by 7 publications

(4 citation statements)

References 46 publications

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“…However, growth rates estimated by 18 O qSIP in soils without substrate input (0.0002-0.001 h −1 , data extracted from Figure 4 in Morrissey et al, 2018) and after glucose addition (0.0001-0.0065 h −1 , data extracted from Figure 2 in Li et al, 2019) were 2-3 orders of magnitude lower than microbial growth as assessed by SIGR (Figure 1). This underestimation of growth rates by 18 O qSIP occurred despite the calculations in a study by Li et al (2019), who considered that only 60% of the oxygen in DNA comes from water (Koch and Munks, 2018). The rates obtained for growth on glucose by qSIP were several orders of magnitude slower than those obtained by SIGR.…”

Section: Methodological Constraintsmentioning

confidence: 88%

Bridging Microbial Functional Traits With Localized Process Rates at Soil Interfaces

et al. 2021

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In this review, we introduce microbially-mediated soil processes, players, their functional traits, and their links to processes at biogeochemical interfaces [e.g., rhizosphere, detritusphere, (bio)-pores, and aggregate surfaces]. A conceptual view emphasizes the central role of the rhizosphere in interactions with other biogeochemical interfaces, considering biotic and abiotic dynamic drivers. We discuss the applicability of three groups of traits based on microbial physiology, activity state, and genomic functional traits to reflect microbial growth in soil. The sensitivity and credibility of modern molecular approaches to estimate microbial-specific growth rates require further development. A link between functional traits determined by physiological (e.g., respiration, biomarkers) and genomic (e.g., genome size, number of ribosomal gene copies per genome, expression of catabolic versus biosynthetic genes) approaches is strongly affected by environmental conditions such as carbon, nutrient availability, and ecosystem type. Therefore, we address the role of soil physico-chemical conditions and trophic interactions as drivers of microbially-mediated soil processes at relevant scales for process localization. The strengths and weaknesses of current approaches (destructive, non-destructive, and predictive) for assessing process localization and the corresponding estimates of process rates are linked to the challenges for modeling microbially-mediated processes in heterogeneous soil microhabitats. Finally, we introduce a conceptual self-regulatory mechanism based on the flexible structure of active microbial communities. Microbial taxa best suited to each successional stage of substrate decomposition become dominant and alter the community structure. The rates of decomposition of organic compounds, therefore, are dependent on the functional traits of dominant taxa and microbial strategies, which are selected and driven by the local environment.

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Section: Methodological Constraintsmentioning

confidence: 88%

Bridging Microbial Functional Traits With Localized Process Rates at Soil Interfaces

et al. 2021

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“…In a nest web context, it is critical to maximize memory focusing on what is retained, what is removed (Gustafsson et al 2012, Mori and Kitagawa 2014, Baker et al 2015, and what can be developed through forestry practices in adaptive cycles, from individual trees to regions. We need to find locally acceptable ways to retain and recruit large trees, ensure a variety of tree densities and species compositions in the landscape, and manage regional land-use and disturbance regimes to ensure a representative mosaic of forests Laurance 2017, Koch andMunks 2018). In our study area in subtropical forests of Argentina, the national "Ley de Bosques Nativos" (Law 26331) and associated territorial planning under Provincial Law XVI Nº 105 were followed by reduced annual deforestation rates at the provincial level (30,000 km²).…”

Section: Conclusion: Nurturing Resilient Nest Websmentioning

confidence: 99%

Nurturing resilient forest biodiversity: nest webs as complex adaptive systems

Ibarra¹,

Cockle²,

Altamirano³

et al. 2020

E&S

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Forests are complex adaptive systems in which properties at higher levels emerge from localized networks of many entities interacting at lower levels, allowing the development of multiple ecological pathways and processes. Cavity-nesters exist within networks known as "nest webs" that link trees, excavators, e.g. woodpeckers, and nonexcavators (many songbirds, ducks, raptors, and other organisms) at the community level. We use the idea of panarchy (interacting adaptive cycles at multiple spatio-temporal scales) to expand the nest web concept to levels from single tree to biome. We then assess properties of nest web systems (redundancy, heterogeneity, memory, uncertainty, and nonlinearity) using examples from our studies in temperate, subtropical, and tropical forests of the Americas. Although nest webs from Chile, Canada, Argentina, and Ecuador have independent evolutionary histories, structures, and disturbance regimes, they share the main properties of complex adaptive systems. Heterogeneity, redundancy, and memory allow nest web systems to absorb some degree of disturbance without undergoing a regime shift; that is, without changing their basic structures and functions, i.e., the system's identity. Understanding nest webs as complex adaptive systems will inform management practices to nurture the resilience of forest biodiversity in the face of local, regional, and global social-ecological changes.

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“…LiDAR can provide fine-scale information on forest structural attributes (Owers et al 2015) and automated interpretation may increase the accuracy, consistency and utility of the data. In the meantime, however, the MHA map provides a useful tool for assessing mature habitat availability at large spatial scales, particularly when prioritising areas for the protection of threatened species habitat (FPA 2014b) and in managing and monitoring the hollow resource more generally (Koch & Munks 2018).…”

Section: Speciesmentioning

confidence: 99%

Managing mature forest features: The production, accuracy and ecological relevance of a landscape‐scale map

Koch¹,

Webb²,

Cawthen³

et al. 2018

Eco Management Restoration

Self Cite

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Summary Mature trees and forests contain structural features such as tree hollows, large coarse woody debris and large spreading crowns that provide critical habitat for a wide range of species. These features can take hundreds of years to develop and require careful management to ensure their continued availability. Managing these features requires spatial mapping layers to facilitate landscape‐scale management. This paper outlines how a map of mature forest habitat was developed for Tasmania, Australia. The map was produced using spatial data on vegetation type, mature crown density and senescence, a global layer of forest loss data derived from satellite imagery, a database on timber harvest plans and a spatial layer on the extent of fire. The relationship between mapped mature habitat availability (high, medium, low or negligible) and tree hollow availability in wet forest areas was explored, complementing a similar published study in dry forests. The number of large trees likely to have hollows significantly increased with mapped mature habitat availability, although there was considerable variation and overlap between map categories. Data from a fauna locality database and two radio‐tracking studies showed that three of the vertebrate hollow‐using species examined (Swift Parrot, Common Brushtail Possum and the Tasmanian Long‐eared Bat) and nest records of a species reliant on large tree crowns (the Wedge‐tailed Eagle) were all more likely to occur in areas of higher mapped mature habitat availability. It is concluded that this map reflects the relative availability of tree hollows, is ecologically meaningful and will be useful when managing mature forest habitat at large spatial scales, but the variable accuracy of the map at fine scales needs to be taken into account.

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A proposed strategy for maintaining mature forest habitat in Tasmania's wood production forests

Cited by 7 publications

References 46 publications

Bridging Microbial Functional Traits With Localized Process Rates at Soil Interfaces

Bridging Microbial Functional Traits With Localized Process Rates at Soil Interfaces

Nurturing resilient forest biodiversity: nest webs as complex adaptive systems

Managing mature forest features: The production, accuracy and ecological relevance of a landscape‐scale map

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