Characteristics of Recreational Anglers in the Blackwood Estuary, a Popular Tourist Destination in Southwestern Australia

Prior, Sian; Beckley, L.E.

doi:10.3727/154427307784835679

Cited by 11 publications

(8 citation statements)

References 19 publications

(21 reference statements)

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“…Retention of one fish per day had the largest support among anglers. This is in line with previous research, which highlights that usually bag limits are not a source of conflict (Sauer et al, 1997;Edison et al, 2006;Reed and Parsons, 1999;Prior and Beckley, 2007). Though the new size limit restriction was supported by the majority of anglers, there is less consensus on this measure.…”

Section: Discussionsupporting

confidence: 90%

Anglers' views on stock conservation: Sea bass angling in Ireland

et al. 2019

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Section: Discussionsupporting

confidence: 90%

Anglers' views on stock conservation: Sea bass angling in Ireland

et al. 2019

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“…In 1974, S. schomburgkii was estimated to be the most common species retained by recreational fishers, comprising 42% of the total recreational catch in this estuary (Caputi, 1976). By 2005, the species was estimated to comprise 58% of the recreational catch in this estuary (Prior and Beckley, 2007), suggesting a further increase in abundance. In Irwin Inlet, located about 180 km southeast of Hardy Inlet, the earliest recorded catches of S. schomburgkii were in 1946, but the catch rate suggests abundance was very low until 1990, and then began to gradually rise.…”

Section: Evidence For Poleward Shift By S Schomburgkiimentioning

confidence: 99%

Simmered Then Boiled: Multi-Decadal Poleward Shift in Distribution by a Temperate Fish Accelerates During Marine Heatwave

Smith¹,

Dowling²,

Brown³

2019

Front. Mar. Sci.

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Sillago schomburgkii inhabits coastal waters of south-western Australia, where it occurs over a wide latitudinal range (22-35 • S). The species has occupied this range for at least the past century. It is a valuable fishery species, particularly in northern (warmer) areas where it has historically been most abundant. Fishery trends indicate a gradual poleward shift in the center of abundance since the 1950s, coinciding with gradual ocean warming over the same period. This shift dramatically accelerated after the 2010/2011 marine heatwave, when abundance abruptly declined at the northern edge of the range but increased in southern areas. The heatwave drew attention to the significant, but previously unrecognized, distributional shift of S. schomburgkii. It also helped to elucidate the recruitment-related mechanism by which the shift is occurring. There was evidence of exceptionally strong recruitment by the 2010/2011 year class in southern areas, but weaker recruitment at the northern edge. Spawning by S. schomburgkii is associated with ocean temperatures of approximately 20-26 circ C. Temperatures are in this range for most of the year in the north, but only briefly during the height of summer in the south. During the heatwave, coastal temperatures were up to 5 degrees above average. It is likely that the spawning period was reduced in the north but extended in the south, due to higher temperatures, which would explain the recruitment trends in each area. All evidence suggests the distributional shift is primarily due to altered spawning success by resident fish in each area (i.e., self-recruitment), rather than by the movement of adults, or larval dispersal. The accelerated shift during the heatwave was probably due to major changes in self-recruitment, but possibly supplemented by atypical southward larval dispersal. For commercial and recreational fisheries that capture this species, the ongoing poleward range shift could have significant negative, and positive impacts in the northern and southern areas, respectively. Fisheries in southern areas are expected to benefit from an increasing availability of this species, although a predicted climate-induced loss of critical habitats could negate any gains at the southern edge of the range.

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“…It is not clear, however, whether increased fishing pressure and/or environmental changes were responsible for the decline in the abundance of this species in the Blackwood River Estuary, which supports a recreational fishery and a small commercial gill net fishery (Prior & Beckley, 2007;Gardner et al, 2013). As the recruitment of A. butcheri into a population can be highly episodic, the recreational and commercial fisheries in some systems rely almost entirely on a few year classes (Morison et al, 1998).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…The Black Bream Acanthopagrus butcheri is an iconic recreational fish species in southern Australian estuaries and is fished commercially in some of these systems (Lenanton & Potter, 1987;Kailola et al, 1993;Prior & Beckley, 2007;Jenkins et al, 2010). This sparid, which can live for ~30 years (Morison et al, 1998;Potter et al, 2008), completes its life cycle within its natal estuary and typically spends most of the year in its upper reaches, where it spawns during spring and early summer (Potter & Hyndes, 1999;Sarre & Potter, 1999;Williams et al, 2013).…”

Section: Introductionmentioning

confidence: 99%