Rainfall as an Abiotic Factor at Race Rocks

Rainfall  at Race Rocks. Recorded by a Davis Instruments tipping bucket rain gauge. These graphs are made possible by the website victoriaweather.ca

Hourly Rainfall today at Race Rocks

 

 

Rainfall for the past week at Race Rocks

 

 

Rainfall for the past month

Rainfall for 2020 at Race Rocks

 

 

Rainfall graph for 2019

Rainfall graph for 2018

Rainfall graph for 2017

 

ARCHIVES
2016 Rainfall for 2016
NOTE MISSING DATA in 2016 due to equipment failure
2015: Monthly Totals are shown. ( Includes data and graphs at this site.) 2014: Monthly Totals are shown. ( Includes data and graphs at this site.) 2013: Monthly Totals are shown. ( Includes data and graphs at this site.) 2012: Monthly Totals are shown. ( Includes data and graphs at this site.) 2011: Monthly Totals are shown. ( Includes data and graphs at this site.) 2010: Monthly Totals are shown. ( Includes data and graphs at this site.) 2009: Monthly Totals are shown. ( Includes data and graphs at this site.) Note : Jan to July.. equip failure. 2008: Monthly Totals are shown. ( Includes data and graphs at this site.) equipment failure gives blank records for several days 2007: Monthly Totals are shown. ( Includes data and graphs at this site.) Equip failure February March and part of April of 2007 2006: Monthly Rain Totals (includes data and graphs for part of 2006:  

Extreme values since 2006

 

 

 

The Adaptations and Response of Organisms to the Abiotic factor of Rainfall

Canada geese are dependant on the availability of fresh water at Race Rocks. During the winter, the higher level rock pools are refreshed by rainfall. There is no other natural source of water on the island. By the time their eggs hatch in June, most of the pools have dried up, so they have to take their young off the island and over to the mainland. They may make it past the eagles….(Photo by PB)

Juvenile bald eagles in very wet weather.( Photo by Pam Birley)
The availability of water for vegetation on Race Rocks has major implications for the species of plants which can survive on the island. Not only do they have to survive dessication from salt spray, but abundant water in the winter months and almost a total lack of water from June to September. One of the best grasses to tolerate these conditions is Fescue. Here you can see it growing on the natural rock outcrops on the island. 


Go to this exercise on the Water Cycle , along with other biogeochemical cycles.

Other references:  Google Climate change and Rainfall patterns

Global warming already changing rainfall... 

Wetland Conservation – Threatened by Climate Change


Rainbow West of Great Race Rocks from the remote camera 5. Image by Garry Fletcher,

Recent Posts

Busy day

There were visitors, a fresh water delivery and a technician from Veridian to inspect and trouble shoot issues with the solar panels.

I wore my helmet today as it was required to lay out the fire hoses. The hoses run from the Water Tank shed, across the fields, walkways and rock down to the Jetty where the boat and portable water tank are tied up. There were may gull nests to weave the hose around and they were not pleased with me. Sometimes one can carry a small broom over your shoulder as a target for the swooping gulls but this job required two hands. I was spared a direct head strike this time. After the hose was place and I left, they simply went to their nest or on look out. The elephant seal however was very unsure of the hose. To avoid it, she went the long way around from the field to the walkway intersection to make her way to the water via the walkway to the Tank Shed building.  When she discovered the hose there as well, she went back up to the intersection and took the other walkway to the Boat Shed building instead. She clearly has a good mental map of the place.  With all the effort and the lack of options, she braved the last section of hose on the boat ramp to make it to the water. The hoses were left in place as the next water delivery is scheduled in two days.

The female elephant seal on Day 8. She is almost there.

In terms of other wildlife, four pelicans did a tour over the eastern part of the island and headed back across the straight to the east. As I watched them approach, their dark colour and size and their lengthy periods of soaring alerted me to fetch the camera. It was been a while since a pelican last visited.

Brown pelicans

Also of note, the egg thief, or at least one of the culprits responsible for the growing patch of shells revealed himself with a new egg. No distinguishing features or obvious marking so it would be hard to put on a “Wanted” poster…last seen with a wet beak. I watched him walk away and stand near a female a nearby nest. He’s from the neighbourhood! The number of scattered egg shells at the front of the house is also increasing.  Why they deposit them near the house, like proud cats with their catches, is curious.

 

It seems “Silky Smooth” has left for good and is now back in the sea. The last sighting and photo of her was on June 9th. I will miss watching her.

Facility work

The solar technician found two failed solar panels and replaced many of the corroded wire connectors. Tomorrow we will have a better idea how our solar input has increased with the new connectors.

  • cleaned solar panels
  • laid out fire hoses and water pump

Visitors

The park warden, marine biology instructor, two seafront staff, the solar technician and one visitor were on the island today.

Weather

Steady westerly moderate breeze until mid afternoon, then increasing to a strong breeze with gusts of 30 knots. Skies clear with periods of overcast conditions. Daytime temperature: low 10, high 16.

 

 

 

 

 

 

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