Abstract
Context
Successful conservation requires a detailed understanding of critical habitats required to support different plant and animal populations. This is particularly important for rewilding programs where locally extinct species are often introduced into novel or reintroduced into areas that have been dramatically altered since they were extirpated.
Objectives
Here, we explored changes in the volume of foraging pits of three engineers under different vegetation patch types and different landforms in an arid woodland in Australia based on field experiment.
Methods
In this study, we examined the foraging habitat of three ecosystem engineers in the arid eastern Australia: a reintroduced mammal, the greater Bilby (Macrotis lagotis), the Small-beaked echidna (Tachyglossus aculeatus) and a varanid, Gould’s sand goanna (Varanus gouldii). The soil disturbing activities of these three animals has been shown to lead to marked and persistent changes in a range of critical ecosystem functions and services. We tracked the density, size and habitat location of 4102 foraging pits over 3 years, as the measure of habitat favourability and the time taken for these foraging pits to infill (pit longevity).
Results
We found that foraging was non-random, and animals tended to forage more within shrub patches when accounting for the relative cover of shrubs. There were also some differences among different habitat patch types, with generally larger echidna foraging pits beneath shrubs and trees than in the open interspaces. Pit longevity also varied among animal and patch types, with no differences for bilby or goanna pits across all patches, but greater longevity of echidna foraging pits beneath shrubs. Larger pits tended to persist for longer, and those beneath trees were closer together.
Conclusion
Our work shows that foraging, and therefore the ecological effects of these animals vary with the target engineer and the biophysical features of the rewilded habitat. Land restoration programs that aim to restore degraded habitat and ecosystem functions must be cognisant of the idiosyncratic effects of different reintroduced engineers, and the makeup of different patch elements within the target restoration area.
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References
Alkon PU (1999) Microhabitat to landscape impacts: crested porcupine digs in the Negev Desert highlands. J Arid Environ 41:183–202
Andriuzzi W, Wall DH (2018) Responses of belowground communities to large aboveground herbivores: meta-analysis reveals biome-dependent patterns and critical research gaps. Glob Chang Biol 23:3857–3868
Bates D, Mächler M, Bolker B, Walker S (2015) Fitting linear mixed-effects models using lme4. J Stat Soft 67:1–48
Bice J, Moseby K (2008) Diets of the re-introduced greater bilby Macrotis lagotis and burrowing bettong Bettongia lesueur in the Arid Recovery Reserve, Northern South Australia. Aust Mamm 30:1–12
Bleicher S, Dickman C (2020) On the landscape of fear: shelters affect foraging by dunnarts Marsupialia, Sminthopsis spp. in a sandridge desert environment. J Mammal 101:281–290
Bolton J, Moseby K (2004) The activity of Sand Goannas Varanus gouldii and their interaction with reintroduced Greater Stick-nest Rats Leporillus conditor. Pac Conserv Biol 10:193–201
Burbidge AA, Johnson KA, Fuller PJ, Southgate RI (1988) Aboriginal knowledge of the mammals of the central deserts of Australia. Aust Wildl Res 15:9–39
Butchart SHM et al (2010) Global biodiversity: indicators of recent declines. Science 328:1164–1168
Byers JE, Cuddington K, Jones CG, Talley TS, Hastings A, Lambrinos JG, Crooks JA, Wilson WG (2006) Using ecosystem engineers to restore ecological systems. Trends Ecol Evol 21:493–500
Cardillo M, Bromham L (2001) Body size and risk of extinction in Australian mammals. Conserv Biol 15:1435–1440
Clarke LJ, Weyrich LS, Cooper A (2015) Reintroduction of locally extinct vertebrates impacts arid soil fungal communities. Molec Ecol 24:3194–3205
Crist TO (1998) The spatial distribution of termites in shortgrass steppe: a geostatistical approach. Oecologia 114:410–416
Daryanto S, Eldridge DJ (2012) Shrub hummocks as foci for small animal disturbances in an encroached shrubland. J Arid Environ 80:35–39
Dean WRJ, Milton SJ, Jeltsch F (1999) Large trees, fertile islands, and birds in arid savanna. J Arid Environ 41:61–78
Dell B, Malajczuk N, Grove TS, Thomson G (1990) Ectomycorrhiza formation in eucalyptus. New Phytol 114:449–456
Doblas-Miranda E, Sanchez-Pinero F, Adela Gonzalez-Megıas A (2009) Different microhabitats affect soil macroinvertebrate assemblages in a Mediterranean arid ecosystem. Appl Soil Ecol 41:229–335
Eldridge DJ, James AI (2009) Soil-disturbance by native animals plays a critical role in maintaining healthy Australian landscapes. Ecol Manage Restor 10:S27–S34
Eldridge DJ, Koen TB (2021) Temporal changes in soil function in a wooded dryland following simulated disturbance by a vertebrate engineer. CATENA 200:105166
Eldridge DJ, Koen TB, Kilgore A, Huang N, Whitford WG (2012) Animal foraging as a mechanism for sediment movement and soil nutrient development: evidence from the semi-arid Australian woodlands and the Chihuahuan Desert. Geomorphology 157:131–141
Eldridge DJ, Woodhouse JN, Curlevski NJA, Hayward M, Brown MV, Neilan BA (2015) Soil-foraging animals alter the composition and co-occurrence of microbial communities in a desert shrubland. The ISME J 9:2671–2681
Eldridge DJ, Delgado-Baquerizo M, Woodhouse JN, Neilan BA (2016) Mammalian engineers drive soil microbial communities and ecosystem functions across a disturbance gradient. J Anim Ecol 85:1636–1646
Eldridge DJ, Delgado-Baquerizo M, Woodhouse JN, Neilan BA (2017) Contrasting effects of two mammalian soil engineers on microbial communities. Aust Ecol 42:380–384
Garrido P, Edenius L, Mikusiński G, Skarin A, Jansson A, Thulin C-G (2021) Experimental rewilding may restore abandoned wood-pastures if policy allows. Ambio 50:101–112
Howard KSC, Eldridge DJ, Soliveres S (2012) Positive effects of shrubs on plant species diversity do not change along a gradient in grazing pressure in an arid shrubland. Basic Appl Ecol 13:159–168
James AI, Eldridge DJ (2007) Reintroduction of fossorial native animals and the potential impact on ecosystem processes in a Central Australian desert landscape. Biol Conserv 138:351–359
James AI, Eldridge DJ, Hill BM (2009) Foraging animals create fertile patches in an Australian desert shrubland. Ecography 32:723–732
Johnson CN (1994) Distribution of feeding-activity of the Tasmanian bettong Bettongia-gaimardi in relation to vegetation patterns. Wildl Res 21:249–255
Jones CG, Lawton JH, Shachak M (1994) Organisms as ecosystem engineers. Oikos 69:373–386
Kinlaw AW (1999) A review of burrowing by semi-fossorial vertebrates in arid environments. J Arid Envir 41:127–145
Lamont BB, Ralph CS, Christensen PES (1985) Mycophagous marsupials as dispersal agents for ectomycorrhizal fungi on Eucalyptus calophylla and Gastrolobium bilobum. New Phytol 101:651–656
Mallen-Cooper M, Nakagawa S, Eldridge DJ (2019) Global meta-analysis of soil-disturbing vertebrates reveals strong effects on ecosystem patterns and processes. Glob Ecol Biogeog 28:661–679
Manning AD, Eldridge DJ, Jones CG (2015) Policy implications of ecosystem engineering for multiple ecosystem benefits. In: Armstrong D, Hayward MW, Moro D, Seddon PJ (eds) Advances in reintroduction biology of Australian and New Zealand fauna. CSIRO Publishing, Clayton, pp 167–184
Marquart A, Eldridge DJ, Geissler K, Lobas C, Blaum N (2020) Interconnected effects of shrubs, invertebrate-derived macropores and soil texture on water infiltration in a semi-arid savanna rangeland. Land Degrad Develop 31:2307–2318
Nørnberg P (1977) Soil profile development in sands of varying age in Vendsyssel. Denmark, Catena 4:165–179
Okin GS, Heras M-D, Saco PM, Throop HL, Vivoni ER, Parsons AJ, Wainwright J, Peters DPC (2015) Connectivity in dryland landscapes: shifting concepts of spatial interactions. Front Ecol Environ 13:20–27
Paine TD, Steinbauer MJ, Lawson SA (2011) Native and exotic pests of eucalyptus: a worldwide perspective. Ann Rev Entom 56:181–201
Perino A, Pereira HM, Navarro LM, Fernández N, Bullock JM, Ceaușu S, van Cortés-Avizanda A, Klink R, Kuemmerle T, Lomba A, Pe’er G, Plieninger T, Rey Benayas JM, Sandom CJ, Svenning J-C, Wheeler HC (2019) Rewilding complex ecosystems. Science 364:6438
Pizzuto TA, Finlayson GR, Crowther MS, Dickman CR (2007) Microhabitat use by the brush-tailed bettong Bettongia penicillata and burrowing bettong B. lesueur in semiarid New South Wales: implications for reintroduction programs. Wildl Res 34:271–279
R Core Team 2021 R: a language and environment for statistical computing. R foundation for statistical computing, Vienna, Austria
Radnan GN, Eldridge DJ (2017) Does the morphology of animal foraging pits influence secondary seed dispersal by ants? Austral Ecol 42:920–928
Regos A, Domínguez J, Gil-Tena A, Brotons L, Ninyerola M, Pons X (2014) Rural abandoned landscapes and bird assemblages: winners and losers in the rewilding of a marginal mountain area NW Spain. Region Environ Change 16:199–211
Rissing SW (1988) Seed-harvester ant association with shrubs: competition for water in the Mohave desert? Ecol 69:809–813
Robinson T, Haska J, Hodgens P, Groffen H (2020) The natural history of Wiluwilya and Wilderness Valley, western Kangaroo Island, South Australia Part 2: vertebrates and invertebrates of an area of forest and mallee. South Aust Nat 94:77–116
Ross CE, Munro NT, Barton PS, Evans MJ, Gillen J, Macdonald BCT, McIntyre S, Cunningham SA, Manning AD (2019) Effects of digging by a native and introduced ecosystem engineer on soil physical and chemical properties in temperate grassy woodland. PeerJ 7:e7506
Schlesinger WH, Reynolds JF, Cunningham GL, Huenneke LF, Jarrell WM, Virginia RA, Whitford WG (1990) Biological feedbacks in global desertification. Science 247:1043–1048
Svenning JC, Pedersen P, Donlan J, Ejrnaes R, Vera FWM (2015) Science for a wilder Anthropocene: synthesis and future directions for trophic rewilding research. PNAS 113:898–906
Tongway DJ, Ludwig JA, Whitford WG (1999) Mulga log mounds: fertile patches in the semi-arid woodlands of eastern Australia. Aust J Ecol 14:263–268
Travers SK, Eldridge DJ (2012) Landscape modulators and resource accumulation in a post-fire eucalypt woodland. For Ecol Manage 285:11–19
Valentine LE, Ruthrof KX, Fisher R, Hardy GESJ, Hobbs RJ, Fleming PA (2018) Bioturbation by bandicoots facilitates seedling growth by altering soil properties. Funct Ecol 32:2138–2148
Van der Drift J (1964) Soil fauna and soil profile in some inland-dune habitats. Soil Micromorph 64:69–81
Vander Zanden MJ, Hansen GJA, Latzka AW (2017) A framework for evaluating heterogeneity and landscape-level impacts of non-native aquatic species. Ecosyst 20:477–491
Walker PJ (1991) Land systems of Western New South Wales. Soil Conservation Service of New South Wales, Sydney
Westbrooke ME, Miller JD, Kerr MKC (1998) The vegetation of the Scotia 1: 100 000 map sheet, western New South Wales. Cunninghamia 5:665–684
Whitehouse MEA, Shochat E, Shachak M, Lubin Y (2003) The influence of scale and patchiness on spider diversity in a semi-arid environment. Ecography 25:395–404
Whitford WG (2002) Ecology of desert systems. Academic Press, London
Whitford WG, Kay FR (1999) Biopedturbation by mammals in deserts: a review. J Arid Environ 41:203–230
Wolf C, Ripple WJ (2018) Rewilding the world’s large carnivores. Roy Soc Open Sci 5:172235
Zhao H-L, Liu R-T (2013) The “bug island” effect of shrubs and its formation mechanism in Horqin Sand Land, Inner Mongolia. CATENA 105:69–74
Acknowledgements
We acknowledge the considerable financial, logistical and technical support provided by the Australian Wildlife Conservancy through their Scotia Sanctuary, in particular, Joss Bentley. We thank Samantha Travers, Niki Huang, Alex James, James Glasier and Sichong Chen for assistance with field work, and Eve Slavich for guiding us through the statistical process. This research was supported by the Australian Government under ARC Grant LP0882630, the Hermon Slade Foundation (HSF21040) and Jingyi Ding was supported by the Fundamental Research Funds for the Central Universities.
Funding
This research was supported by the Australian Government (Grant No. LP0882630), the Hermon Slade Foundation (HSF21040) and the Fundamental Research Funds for the Central Universities.
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DJE and JV designed the study and methodologies and collected the field data. DJE compiled the database. DJE and JD analysed the data and wrote the manuscript.
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Eldridge, D.J., Ding, J. & Val, J. Foraging pit location provides valuable insights into critical habitat requirements of soil engineers. Landsc Ecol 38, 1209–1220 (2023). https://doi.org/10.1007/s10980-023-01610-4
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DOI: https://doi.org/10.1007/s10980-023-01610-4