Page 155 - Atlas Sea Birds Ver1
P. 155

Crowned     Hartlaub's   Greater
                                                                        Year
                                                                                 Cormorant      Gull    Crested Tern
                                                                        2010                     0          0
                                                                        2011                     0          0
                                                                        2012         6           0          0
                                                                        2013         8           0          0
                                                                        2014        46          15          0
                                                                        2015        24           0          0
                                                                        2016         3           0          0
                                                                        2017        19           0          0
                                                                        2018         2           0          0
                  A Cape Grysbok at Marcus Island in 2012 (photo BM Dyer)  2019      2          10          0
                                                                        2020         0           0          0
                  decreased  availability  of  quality  food was considered  a
                  probable cause of that initial decrease (Shelton et al. 1984).  Gull and Greater Crested  Tern have nested. Crowned
                                                                    Cormorant has bred on seldom-used boats in the harbour,
                  Saldanha Harbour environs                         structures on the oil jetty and on buoys and the remnants
                  Coordinates: 33.038 S; 18.007 E                   of sunken boats inside the harbour.
                  Description:  A  mainland  harbour  that  includes  fishing   Conservation status: The breeding sites are not protect-
                  factories, on the buildings and premises of which Hartlaub’s   ed. However, access to the harbour is controlled.

                  Numbers  (pairs)  of  different  seabird  species  breeding  around   Species   and    numbers    breeding:  Numbers of  birds
                  Saldanha Harbour, 1976–2020                       breeding  in and around Saldanha  Harbour  are
                                Crowned     Hartlaub's   Greater    indicated  on  the table applicable to this locality. Up to
                      Year     Cormorant      Gull    Crested Tern  46 pairs of Crowned Cormorant, 600 of Hartlaub’s Gull and
                                                                    442 of Greater Crested Tern have bred there.
                      1976                    200
                      1977                    240                   Jutten Island
                      1978                    178                   Coordinates: 33.083 S; 17.955 E
                      1981                    260                   Description: An island at the south of Saldanha Bay. It has
                                                                    an area of c. 46 ha, rises to about 61 m above sea level and
                      1982                    127
                                                                    has a jetty and accommodation for temporary staff, sev-
                      1984                                0         eral derelict buildings and a shed for guano on its northeast
                      1987                                0         coast. There are two hills at the southeast of the island,
                                                                    the rest of which is mainly flat with large boulders between
                      1988                    300         0         which sparse (summer) to dense (winter) vegetation grows
                      1989                                0         (Rand 1963). Stone and concrete walls subdivide the is-
                      1990                                0         land (Rand 1963) facilitating counting of nesting birds and
                      1991                                0         perhaps earlier the collection of penguin eggs.
                                                                      Seabird guano was collected at Jutten Island in 79 years
                      1992                                0         between 1897 and 1981, the total quantity removed from
                      1993                                0         the island in this period being 21,175 metric tons (Tom et
                      1994                                0         al. 2024).
                      1995                                0           In 25 years between  1872 and 1967, 1,774,408
                                                                    African  Penguin eggs were harvested at Jutten Island
                      1996                                0
                                                                    (Makhado et al. 2024).
                      1997                                0           Since 2005 small numbers of Cape Fur Seals have bred
                      1998                                0         on a rock that is closely adjacent to Jutten Island. Up until
                      1999                    130        300
                      2000                    520        442
                      2001                    600        184
                      2002        10          295        284
                      2003         9          68          7
                      2004                    198        159
                      2005                    58          0
                      2006                     0          0
                      2007                     0          0
                      2008                    40          0
                      2009                     0          0         An African Penguin nesting at Jutten Island (photo PJM Crawford)


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