Bitterputs Conservation Area

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General Information

Status:

Global IBA (A1, A2, A3)

Province:

Northern Cape

Protection:

Unprotected

Size:

68 580 ha

Number:

SA036

Additional Info

  • Site description

    The Bitterputs Conservation Area is situated 65 km south-west of Pofadder. This arid landscape consists of extensive sandy and gravel plains covered with sparse, perennial desert grassland. The coarse, pale red sandy soils and red dunes of the southern section of the Koa River valley system bisect the IBA. Extremely low rainfall, at 70–90 mm annually, results in the grass cover being only 30–40%. Gravel plains are covered with sparse dwarf shrubland and short bushman grasses. A few large salt pans are a unique habitat type in this IBA.

    The conservation area falls within the Bushmanland Bioregion and the Nama Karoo Biome. Three vegetation types are present: the Bushmanland Vloere (salt pans), Bushmanland Arid Grassland and Bushmanland Sandy Grassland. The ecosystem status for the entire area is Least Threatened.

    Although much of the land area is still natural, some parts are probably overgrazed and degraded. It appears that most of the land in this IBA is used for sheep and goat ranching. There is some evidence of over-utilisation in the north-eastern section, but the total extent is unknown.

    Birds

    This IBA is one of a few sites protecting both the globally threatened Red Lark Calendulauda burra, which inhabits the red sand dunes and sandy plains where there is mixed cover of grasses and dwarf shrubs, and the near-threatened Sclater’s Lark Spizocorys sclateri. This site also holds 16 of the 23 Namib-Karoo biome-restricted assemblage species and a host of other arid-zone birds.

    At the time this IBA was assessed it had not yet been atlased for the SABAP2 project. A total of 47 species was recorded for SABAP1, including the Red Lark and three other lark species.

    Ludwig’s Bustard Neotis ludwigii, Kori Bustard Ardeotis kori and Karoo Korhaan Eupodotis vigorsii are present in this IBA, and Secretarybird Sagittarius serpentarius and Lanner Falcon Falco biarmicus have been recorded here.

    IBA trigger species

    Globally threatened species are Red Lark, Sclater’s Lark, Kori Bustard and Ludwig’s Bustard. Regionally threatened species include Karoo Korhaan. Restricted-range and biome-restricted species are Stark’s Lark Spizocorys starki, Karoo Long-billed Lark Certhilauda subcoronata, Black-eared Sparrow-lark Eremopterix australis, Tractrac Chat Cercomela tractrac, Sickle-winged Chat C. sinuata, Karoo Chat C. schlegelii, Karoo Eremomela Eremomela gregalis, Cinnamon-breasted Warbler Euryptila subcinnamomea and Black-headed Canary Serinus alario.

    Other biodiversity

    None.

    Conservation issues

    Threats

    The Bitterputs Conservation Area is one of three Bushmanland IBAs important for the conservation of endemic lark species. Like the nearby Haramoep and Black Mountain Mine Nature Reserve (SA035) and Mattheus-Gat Conservation Area (SA034) IBAs, it has a history of overstocking and the resultant degradation of habitat. There has been a c. 75% loss of optimal habitat for the Red Lark over the past 100 years. The disappearance of this species from ranches where dune grassland has been replaced by ephemerals is probably linked to the reduction in grass awns for nesting, shelter and invertebrate and plant foods. Black-eared Sparrow-lark, Grey-backed Sparrow-lark Eremopterix verticalis, Pink-billed Lark Spizocorys conirostris, Sclater’s Lark and Stark’s Lark use the awns of desert grasses Stipagrostis species as nest lining and can only start nesting when there is a supply of suitable awns. When the grasses flower and fruit, harvester termites increase their surface activity and they are an important food for lark nestlings.

    BitterputsIn recent years, there has been a shift from cattle ranching on many farms in the region to sheep and goat ranching. However, overstocking and overgrazing is a continuing threat.

    There is a serious threat from climate change and it is predicted that temperatures will increase and rainfall decrease sharply in arid areas such as Bushmanland. Locally resident endemic larks, in particular, are at risk. Increased CO2 can lead to the increase of C3 plants (shrubs) at the expense of C4 plants (mainly grasses), causing a shift in vegetation diversity and structure and making the habitat unsuitable for some species. It is expected that the Red Lark will not meet the challenge of global warming.

    Droughts are predicted to become more severe due to climate change, so birds will have to cope with greater variability in their food, less suitable habitat and different predators, parasites/diseases and competition. Nomadic species (such as Stark’s Lark) may find it easier and only have to decide where to go, but resident species (Sclater’s Lark, Red Lark) are more likely to remain in their patch and use the available resources as best they can.

    Other significant threats are prospecting for diamonds and possible diamond mining. The lack of monitoring, formal protection and a management plan for this IBA is cause for concern.

    Conservation action

    Currently no part of this IBA is formally conserved and no conservation actions have been implemented. Bitterputs falls within the Central Astronomy Advantage Area, which has restrictions on activities that can take place in it. This could result in some protection for the IBA.

    Future considerations for conservation action include linking Bitterputs to the Mattheus-Gat Conservation Area and Haramoep and Black Mountain Mine Nature Reserve IBAs. There are medium-term plans to declare a large Protected Environment, namely the Bushmanland Conservation Area, which will include this IBA. Since 2013, African Parks has been working on plans to establish this area through land purchase, proactive stewardship and biodiversity offsets.

    Related webpages

    None.

    Contact

    If you have any information about the IBA, such as a new threat that could impact on it, please send an e-mail to iba@birdlife.org.za or call BirdLife South Africa +27 (11) 789 1122.

    Page last updated

    Tuesday, 20 January 2015

    Further Reading

    Barnes K (ed.). 1998. The Important Bird Areas of southern Africa. Johannesburg: BirdLife South Africa.

    BGIS online. 2014. Biodiversity GIS, SANBI. Available at www.bgis.sanbi.org [accessed September 2014].

    BirdLife International. 2014. Species factsheet:Certhilauda burra. Available at www.birdlife.org [accessed September 2014].

    BirdLife International and Durham University. 2014. Species climate change impacts factsheet: Certhilauda burra. Available at www.birdlife.org [accessed September 2014].

    Dean WRJ. 1989. The nest, egg and nestlings of the Red Lark Certhilauda burra. Ostrich 60: 158.

    Dean WRJ. 1993. The Red Lark in the greenhouse world. African Wildlife 47(5): 211–214.

    Dean WRJ. 1995. Where birds are rare or fill the air: the protection of the endemic and nomadic avifaunas of the Karoo. PhD thesis, Percy FitzPatrick Institute of African Ornithology, University of Cape Town, South Africa.

    Dean WRJ. 1997. The distribution and biology of nomadic birds in the Karoo, South Africa. Journal of Biogeography 24: 769–779.
    Dean WRJ, Barnard P, Anderson MD. 2009. When to stay and when to go: trade-offs for southern African arid-zone birds in times of drought. South African Journal of Science 105: 24–28.

    Dean WRJ, Hockey PAR. 1989. An ecological perspective of lark (Alaudidae) distribution and diversity in the southwest arid zone of Africa. Ostrich 60: 27–34.

    Dean WRJ, Lombard AT. 1994. The protection of nomadic birds in the semi-arid Karoo: the problems of stochastic rainfall and patchy habitat use by larks. Journal für Ornithologie 135: 281.

    Dean WRJ, Milton SJ, Watkeys MK, Hockey PAR. 1991. Distribution, habitat preference and conservation status of the Red Lark Certhilauda burra in Cape Province, South Africa. Biological Conservation 58: 257–274.

    Dean WRJ, Siegfried WR. 1997. The protection of endemic and nomadic avian diversity in the Karoo, South Africa. SA Journal of Wildlife Research 27: 11–21.

    Dean WRJ, Williams JB. 2004. Adaptations of birds for life in deserts with particular reference to Larks (Alaudidae). Transactions of the Royal Society of South Africa 59(2): 79–91.

    Githaiga-Mwicigi JMW, Fairbanks DHK, Midgley G. 2002. Hierarchical processes define spatial pattern of avian assemblages restricted and endemic to the arid Karoo, South Africa. Journal of Biogeography 29: 1067–1087.

    Hole DG, Willis SG, Pain DJ, Fishpool LD, Butchart SHM, Collingham YC, Rahbek C, Huntley B. 2009. Projected impacts of climate change on a continental-wide protected area network. Ecology Letters 12: 420–431.

    Jenkins AR, Shaw JM, Smallie JJ, Gibbons B, Visagie R, Ryan PG. 2011. Estimating the impacts of power line collisions on Ludwig’s Bustards Neotis ludwigii. Bird Conservation International 21: 303–310.

    Lloyd P. 1999. Rainfall as a stimulus to breeding and a determinant of clutch size in arid-zone birds. Ibis 141: 637–643.

    Midgley G, Rutherford M, Bond W. 2001. The heat is on… Impacts of climate change on plant diversity in South Africa. Cape Town: National Botanical Institute.

    Milton SJ, Dean WRJ. 2000. Disturbance, drought and dynamics of desert dune grassland, South Africa. Plant Ecology 150: 37–51.

    Mucina L, Rutherford M (eds). 2006. The vegetation of South Africa, Lesotho and Swaziland. Strelitzia 19. Pretoria: South African National Biodiversity Institute.

    Namakwa District Biodiversity Sector Plan. 2008. Department of Tourism, Environment and Conservation Northern Cape, Conservation International SA & Botanical Society of SA.

    RSA (Republic of South Africa). 2008. Astronomy Geographic Advantage Act (Act No. 21 of 2007). Government Gazette, South Africa 516(31157).

    Simmons RE, Barnard P, Dean WRJ, Midgley GF, Thuiller W, Hughes G. 2004. Climate change and birds: perspectives and prospects from southern Africa. Ostrich 75(4): 295–308.

    Steyn P, Myburgh N. 1989. Notes on Sclater’s Lark. Birding in SA 41: 67–69.

    Todd S, Milton SJ, Dean WRJ, Carrick P, Meyer A. 2009. Ecological best-practice livestock production guidelines for the Namakwa District. Produced for the Botanical Society of SA and CEPF.

    Watkeys MK. 1986. Bushmanland birds. Part 1: Habitats. Bokmakierie 38: 100–104.

    Watkeys MK. 1987. Bushmanland birds. Part 2: Survival. Bokmakierie 39: 3–7.

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